OILS SEAL, MYTHS AND TRICKS WITH CORTECO'S ALEKSANDAR TONTIC

Join us in this insightful episode of Wikibearings as we dive into the fascinating world of automotive and industrial seals with Corteco's expert Aleksandar Tontić. With years of hands-on experience and a wealth of knowledge, Alek unpacks the history, evolution, and crucial role seals play in modern engineering.

Discover the different types of seals, from dynamic to static, and learn why selecting the right material, design, and installation technique is vital for performance and longevity. Explore the groundbreaking innovations shaping the future of sealing technology, including applications for electric vehicles and sustainable solutions.

Whether you're a seasoned engineer or simply curious about the unsung heroes that keep machines running smoothly, this episode offers valuable insights you won't want to miss. Tune in and get ready to seal the knowledge gap!

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Transcript

[00:00:00] Welcome to Wiki bearings, where we dive into the worlds of engineering excellence, from the automotive marvels to the industrial giants. Join us to explore the wonders that keeps the world in motion. My name is Hassanein Alwan and I'm your host.
Welcome to another episode of Wiki bearings. In today's episode, we have a very interesting topic. We're going to discuss seals. Automotive seals, especially and different types of seals. And for this particular episode, I have a very special guest, an expert into the automotive seals with many years of hands on experience, trainer, and an expert in corteco.
Welcome to the show. Aleksandar Tontic. Thank you very much for such a nice announcement. Uh, [00:01:00] as you as you said, I have a lot of experience, but okay, I'm still learning because if you're not learning, You cannot advance. We are always a student of this life. Yeah, of course, of course. Life is, is, is a great teacher for us.
Definitely. Aleksandar, or maybe I will call you Alex. Yes, it's better Alex. Yeah. Alex, um, I know that you have spent The past, uh, few years or maybe many years in, in Corteco organization, um, and you have been both a technical sales, technical support, a trainer. So I have the right expert for this, uh, this topic and, uh, for some of our audience that are maybe not so much familiar with the Corteco brand.
What, what are the range of corteco? So if you tell us a little bit more about what, what corteco is a brand and what range is inside corteco. First to make, [00:02:00] make introduction of, uh, uh, today's topic. Uh, I would like to say something about company itself. Corteco was very, very old company. Uh, it was established in 1925 in Torino in Italy, uh, as a, uh, under the name corteco show.
But in 1932, they changed the name in Corteco, which is still today as a name. Uh, what is, is really important, we joined to the company Freudenberg. Actually, Freudenberg acquired Corteco at 1936. 1936. And since those years, it's, it's such a, uh, Nice and, and prosperous marriage between the Corteco and Freudenberg.
Uh, we use a lot of, uh, expertise and resources from Corteco and we become very famous by the shaft seals. Actually, the shaft seals was invented in Freudenberg, uh, by the, uh, their engineer Walter Siemer in 1929. [00:03:00] That was the initial. Uh, invention. And since 1932, they start producing, we start producing the serial production of the shaft seals.
What was the idea? Uh, just to, uh, making easier maintenance of the machines and also the vehicles in those time because, uh, since beginning of the 20th century, expansion of the production of the cars is Immense. Immense. So that's beginning of the story. And from the 1936, we started producing the shaft seals of the artificial rubber.
Okay. Perbunan, or today known as MBR. That's one of the oldest, oldest rubber, which used for the, for the shaft seals. Yeah. I know that in the beginning for sealing, they were using, I think, normal rubber. Leather or some kind of, uh, material, which is more natural material. Yes, actually, actually just, I need to, to, to add something, uh, [00:04:00] Freundeberg as a company, they have storied the history, uh, which beginning in 1849 as a tannery in Mannheim, the Carl Jochen Freudenberg, uh, founded those company.
And we start as a tannery cause of, uh, a huge factory and production. There is a lot of problems in the maintenance of the machine. You know very well when some, some, uh, uh, machines stop on a, for example, on construction site or in the factory, you need to react very fast. In those time SEALS was made of the ropes on leather beneath, beneath the flanges and the Walter Simmer just invented one very simple element, which was exchanging in a very few minutes, very fast.
So, but the first, first shaft seals was really made of the leathers and, uh, those leather was, uh, impregnate with Akronal. Akronal is still using today as an impregnation material. Especially in construction site for, [00:05:00] for the concrete and porous materials. So, but when the rubber was introduced in production and made the first one, then the history really began.
I think also where the brand or the name of Simrit came from, right? Simrit, yes. Simrit is, uh, Given by the inventor, Alter Siemer. Because this is, uh, still, I think, a lot of seals, uh, people will ask about, uh, Simmering, Simmering seals. It's, it's quite a, an old famous Schaftseel is, is, uh, English translation.
Yes. With, without offense, but the Simmering is, is a real name, actually the ring of Simmer. Yes. Yes. And, and I think it goes back many, many years. Um, if we look at, um, now that you told us a little bit about how the name of Corteco came and how Frodenberg was involved in, in, in this part. Now, today, Corteco as a [00:06:00] brand is a well known brand available over the world.
Many, many countries, very famous in Europe, but they are across Europe, Asia, Middle East, Africa. Also you are present in America and so on. So let us tell us more a bit, the range of cortical, what are the products beyond the seals? For example, If you just focus on automotive industry, I can tell you, uh, in, uh, Point of sealing.
Uh, we have about 7, 000 different references for the static seals and over the 4, 000 references for the dynamic seal. Just to explain dynamic sealing is actually simmering. It's a seal. Where is this? Some movement present rotational or linear static is you know Well, we have some some two elements clumped and between them [00:07:00] is some seal Also doesn't matter if you speak about oil, but also about other different fluids so so if we if we look a little bit beyond the I know that Corteco is producing some filters and some other products.
Well, can you tell us a little bit about the other products? Yes. Uh, filtration is another, uh, brake hoses, steering and suspension part. And also particularly is, is very important on the, on the vehicles is vibration control elements and parts, uh, like, uh, crankshaft, bullies, engine mounts, top strut mounts, uh, different kind of the, of the bushings.
Hmm. It's all of those is, is rubber to metal, but what this is significant for all of those elements, also for the shaft seals is a material, actually elastomer. Uh, I proudly can say the Freudenberg is one of the best in the technology of the materials. Uh, just as a [00:08:00] reference now active, we have eight, uh, 1800, uh, different recipes, active are 8, 000.
Is still in the archive, just in a case if some of our partners need for the sum maintenance, uh, especially focused for the, for the industrial area, you know, for example, on the, on the, on the coal mine, you will maintain one in five years, some of the excavators. True. You need some, some, some specific seals for them.
Made of very specific material, which can last another additional five years. So, because of that, we have an archive and we don't throw any single recipe. Of course, for Odenberg, when it comes to the material and the rubber material, this is like the niche or the speciality of the technology behind. Yes.
Now, let's dive a little bit deeper into the seals. Now, uh, you started telling us a little bit about dynamic seal and [00:09:00] static seals, you know, like whenever we have a rotation or a movement, we call them dynamic seals. When we have, uh, no movement, let's say, maybe two different parts we want to, we want to seal.
It could be oil or water or any other fluids. I think. Yes. Even air. Okay. Exactly. So normally this is are the static seals. But if we look at, let's call, let's look first on the dynamic seals. What are the different types of dynamic seals available today in the market? Plenty of dynamic seals, uh, because, uh, everyday challenge and the new project with our partners just looking, uh, to, to create or they started, they face always with some problem.
For example. One of the best friends of the Bering is a seal, you know, very well. Brothers and sisters. Yes, exactly, exactly, exactly. Very close, very close relatives. [00:10:00] Uh, let's say siblings. Yeah. Uh, so, they sat in front of our engineers and chemists, uh, uh, What kind of seal they needed this depends how we will create the material how we design the shaft seal It's not not the the easiest.
Okay for the standard one with the spring. It's it's normal. It's a standard spring and they uh, plenty of application use those those seals, but In some cases, for example, for agriculture, for the construction, uh, for the some, some industrial machine, they need a very specific design and construction. For example, one of those is, uh, let's say cassette seals.
Which use on on the off road vehicle on the trucks on the agriculture on the on the excavators and so on just to protect the bearings and very fragile, uh, gear, uh, reducers, which is behind also there is there is a [00:11:00] combi seals. Also also very, very interesting design. Uh, one of them is Costco seal, for example, made for the truck engines.
Which can last close to 1. 5 million kilometers, which is, which is really impressive. Long, long lasting. Long, long lasting. Without, without leakage. Okay. If the engine is start leaking on, on other parts, that's, that's another problem. Okay. Now, now we hear always the word seal and sealant and oil seals. So like again for for our audience that is looking at us and seeing us, uh, how do you define what is what is a seal and what is the purpose to use a seal?
Actually, actually seal when we, uh, uh, looking in dictionary that means a fix or close in a secure way and insulate some area avoiding something getting in or getting out. That's the definition of the seal. The similar is [00:12:00] the for the shaft seal. For example, if we install on some assembly. Uh, first task is just to provide protection of the assembly, which is behind either.
We speak about bearings, either we speak about some gears or, or some, some engine parts. From other side, they need protect the leakage and losing of the valuable fluid oil, for example, which is, uh, uh, uh, important for lubrication of all of those components or in some process to keep the some different kind of the fluid inside.
Sealing them in or sealing them out? Yes, yes, exactly. And I think also a very important part of the purpose of the seal is also to protect from contamination. Exactly, to keep the incursion. Yes, incursion from contaminant, from environment, like water, like dust. [00:13:00] Especially here in your country, there is plenty of dust, which is the worst enemy of water.
any machine of any, any, any device. Uh, the second could be a salty water, for example, in, in, in the sea for the, for the vessels and for, for the, some, some, uh, boats, uh, muddy water. For example, if, if some, some of the machines is working on, on, uh, uh, swamps or something. They need to protect, for example, the, the agricultural machinery, they always working in, in a really harsh conditions to protect.
For example, the cassette seals is just made for, for those reason. And, uh, one of the, of the, uh, uh, premium, uh, uh, level is, uh, uh, Mark with the case seven. Those cassette seals could last close to 4, 000 hours, working hours. Nice, nice, nice. Which is really impressive, really impressive. Also, you can find the cassette [00:14:00] seals also on the off road vehicle.
Like, like some, some terrain, uh, jeeps or, or, or something through. I think, I think when we look at the different application, there are different challenges. Some, uh, some application you want to protect from water or humidity, some other application from dust, another mud could be another. Uh, solvent on another fluid that you want to isolate out, uh, from protecting the, the, the components inside and, and, and this is why investing in a good seal can protect the machine in, in, in a very different level than what, what, uh, the cost of the seal itself, that's actually difference between the good and, and the, let's say fake seal, the material actually, uh, uh, When our engineers, uh, uh, designing some shaft seals, they, they pay attention of many aspects.
One of the aspects is first, physical dimensions [00:15:00] of the shaft. The second one is, is how those shaft is, is made at roughness. Hmm. We just prescribed that the roughness of the shaft, the, the another one is a speed of rotation. It's really crucial because the speed could harm very badly. If he, if he miss the material, they will just burnt.
Yes. Then, uh, uh, uh, uh, uh, media, oil, acid, water, uh, water with detergent like in washing machine, for example. Uh, then the pressure and also the temperature. That's all, all, all the design. Yes. Only for the one seal. True. It's not easy to, to choose the good seal. So. It's better to choose the original one, not to taking a something which offering under the cheaper price because either the shaft seal is not so expensive, [00:16:00] but they keeping and and protecting very valuable equipment, which is behind, which is normally much more expensive.
Yes. Can you imagine, for example, on the truck, one bearing is cost a lot of money. Yes. If you use the Samsung cheap shaft seal, what could happen with those very expensive bearing? You know very well. Yes, I know. I know. It will not last very long. That's all I can tell you. Not only the bearing. Bearing will be stuck, but those will result with another problems, breaking some gears or even the damage, the breaking system, the hub, the flange, many, many things.
Now, I cannot for sure. The different element to design is a good seal. Uh, there are many, as you said, the environment, the shaft, the contamination, the medium, all of that. But I think the most important part of a seal is the [00:17:00] material itself. Yes. Uh, because different, uh, application needs the different materials.
If you speak common use in, in, uh, automotive industry today, uh, I can just, uh, Assume as a four materials, MBR, ACM, FKM, and PTFE. I will just explain. MBR is, is a per bunan, is very old material. By production. ACM is acrylic and BR is actually used only for the slow moving, uh, shafts, let's say low speed. ACM it's still used for the engines in some applications, but FKM, uh, ton or PTFE, arca Teflon, it's used common use today on the motor engines in the high speed rotational shafts.
Those materials is highly durable. They withstand with the temperature, uh, uh, [00:18:00] range between minus 80 T plus 200. Teflon, for example, ton is minus 20 till plus 200. It's really high temperature. So those materials is really durable and not possible to exchange. For example, I know, uh, the next question because, uh, I faced with those, those questions many times on the field.
Uh, for example, if you have Teflon, actually PTFE on engine, it's not possible to replace with some, another kind because they will burn. Only exception in one case, if the manufacturer or designer of engine predict to exchange with the some another only in that case, other it's not possible. I think because of the environment and the speed of the shaft, if you use a, another material that is not, uh, applicable to use, [00:19:00] then you are very fast damaging the, the, the material, uh, which is the ceiling.
So at the end of the day, after a few hours of operating, you already damaged the seal. So the seal lose it is. characteristics, uh, it can cause even a fire or can cause some burning smoke burning and depending on the environment. Um, but at the end of the day, the wrong seal at the wrong location does not give you what you want, which is the ceiling.
They can create, they can create such a mess and destruction Problem. Yeah. For example, you mentioned the temperature. It's also very important if we not use the proper material, which is prescribed for this application. What could happen? Rubber has some, some property to vulcanizing again, if they goes above designer temperature.
For example, if [00:20:00] NBR is designed to working on maximum 120 degree, if they expose 150, 160, In a very short period of time, they will vulcanize and become too hard. Afterwards, they start to leaking. Afterwards, the sand from the desert will came there, creating some, uh, fine file and just to cut the, some bit on the, on the shaft.
And we destroy the, such a valuable element only because of one seal, which we Not, not used in a proper way. You, you know, um, if we, if we look at, of course people try to find solution and, and this looks very similar to this, and, and I think it's, it's very important that the, the, what we are trying to protect from a ceiling perspective, it's way, way.
[00:21:00] More expensive than the cost of the seal itself. The seal is like the gateway. Exactly. That will tell, you know, like, uh, this is allowed to enter. This is not allowed. Gatekeeper. Gatekeeper. And you have no gatekeeper. A lot, a lots of, uh, the wrong, the wrong element is inside that system. Exactly. And, and after that, if it's a, if you look, it's, for example, it's a gearbox.
You have some contamination, you damage. A very expensive machine, a couple of thousand of euro or dollars, which cost exact repairing is also also very expensive. So when you speak about, uh, in that direction, uh, every single seal, as, as we spoke at the beginning, it's designed for the specific purpose.
It's not. Possible and not advisable, but it's mandatory to use because of that, I use all of those words, uh, use [00:22:00] prescribed actually direct code, which is, uh, for this application. Can you imagine on some wheel hub for the construction machine, there is a cassette seal. It's not available or it's too expensive for someone.
They found the regular one with the single. A sealing lip and with a spring and install there such a shaft seal will start to leaking after the couple of hours, not 10th of hours, a couple of hours, one, two or three hours of work. And what happened? We lose the axle. We lose the gears inside. We lose the brakes.
When you make in summary, it's cost 5, 000 euro instead of, for example, 20 or 50 euro. It doesn't matter about prices. I'm just comparing the values and differences. It's become a disaster. This machine, you know, like the cost of repairing the time, the [00:23:00] total cost of maintenance. We're going to, how many hours do you need now to, to repair?
Uh, it's. We go, we go in a much different direction. It's not even just the cost of the maintenance, no production time. All of that is a cost. How to get the rest of the spare parts. It's always, always is, is mandatory to check the code. If the guys don't know which code is, They can refer on our web page.
Find your seal. There is, there is such a good tool only by dimension. You can found exact the shaft seal you needed. It doesn't matter. For example, someone who wants to, wants to repair the, the, some caterpillar, uh, uh, show will, will load it and they don't know exact code, but they have a caliper. Take a measure, put in a tool, they got some, some references, and they choose, okay, ah, this is on the hub, wheel hub, okay, I need this one.
They got the code, call you, do you have it? Yes, we have [00:24:00] it. Do you need something else? Because in this goes, this, this, this, and that, you need all of this for, for the repair. And that's the right way how to, how to fix the problem and making a assembly, uh, longer for work actually, actually making, uh, uh, uh, approved longevity of.
These are maybe small details, but I think they are very crucial to find the right seal. As much as we can iterate, me and you here, and you know, the material, the right seal for the right application, it's crucial, otherwise you don't get the characteristic. What a point to make a maintenance if you don't use the proper parts.
Now, we spoke about the material, we spoke about the characteristic, choosing the right seal. You know, but sometimes, uh, there are seals that are bi directional or can move in two direction [00:25:00] and some seals are designed for one direction. Can you tell us more about this? Is it important? Or can I put Good question.
Good question. Good question. Good observation. Because, uh, on the engines, for example, we have a crankshaft, which rotating always in one direction. Okay. When you're looking in the front and the rear, it's different, but it doesn't matter. One is the left, second is the right. One direction. It's very important because mechanism of, uh, uh, how the shaft seals, sealing actually.
When shaft start to rotating, there is beneath the sealing lip creating, uh, uh, one effect. We call it micro pumping effect. They, uh, uh, force the, the oil to circulating beneath the seal. We need to seal. First, to lubricate the, the sealing lip to avoid burned out and the second to cool down. And also [00:26:00] if some of the very small particles like, like, uh, some, uh, gas vapor or, or some, some very small particles, let's say we cannot, we cannot stop the, the, uh, below the one micron, the, the, some, some particles to stop, but they just spill it beneath the, the sealing lip and get in the, in the, uh.
Mass of oil and then goes through the filters. So helix or, uh, uh, lines you can spot on the, on the shaft seal. Uh, they increase those effect in protect leakage from the, uh, uh, But if you mix the direction instead of left, put the right, the oil immediately goes out because that direction. Yes, exactly. They just drag oil out.
So extremely pay attention because on every, uh, shaft seal, there is a, some arrow which showed the direction. [00:27:00] You know, I, I, uh, why I think this is also important because even if you put All the right profile, the right seal, the right element. But if you put a right direction and then left, uh, shaft, you don't get this ceiling.
And it is a very small arrow that you, we will have to pay attention. Also, there is one trick, there is also, also one trick. If you could not spot the arrow, you can use the, uh, take a shaft seal and outer sides. Just a line up and looking on, on the lines on those helix. If those lines falling on the left, it's a left, it's falling on the right, it's right direction.
So it's very easy, but always we put direction, pay attention because the Teflon shaft seals, they also unidirectional. So it's, it's very important to follow this. Some people say, okay, [00:28:00] I, I, Why I buy one because sometimes you have on one side the right right rotation on the other side left rotation. I'll buy the the Bidirectional and I put here and here is it is it is it something you will advise?
No, it's not possible Thinking on that way, uh, bidirectional is, is made for, for totally different purpose, for example, for the, for the, uh, some application like, uh, differential on the pinion just to protect because, but, uh, I know what you're thinking about it's, it's, for example, on the crankshaft left and right, if there is possible, the engineers will apply this, but, uh, as a helix is, is, uh, uh, one direction, they have a much bigger effect.
For this purpose as they made it, but for the differential, where we have a alternate rotation, it's bidirectional is made in a very specific way. So, so what, what [00:29:00] conclusion that if we have one direction, we use one direction, we don't try to mix them up. No, no. Even, even if you try to use, even if you try to use without, uh, Helix, you can solve the problem, but in very short period of time, it's not solution.
It's not a long goes out. It's not a long term solution. Definitely. So now we, we, we spoke about. The importance of material, importance of direction, the size. Now let's say some of our audience is, is okay. Say, okay, how do I choose the right seal? So what I should think about when I want to choose a seal, what are the steps to take to choose the right seal?
Okay. Uh, if we, uh, uh, looking for that best way, just to refer, if you have. Uh, proper workshop manual to get the code for this, those shots here because those shots is made exact for the very specific application [00:30:00] in other way or other case you can refer in our tool, find your seal. As I explained, just found by dimension and then refer where they install because there is a plenty of application which they can be used.
And you choose, for example, you take out from from the gearbox, there is one icon, gearbox, you choose this icon and you got directly the code. Okay. In this case, Corteco code, but when you open this, those code. You will get OE references through which car, which vehicle, either we speak about tractors or trucks or passenger cars, you will get exact OE codes.
So you can. looking by OE manufacturer, but you will get again, our shop ceiling in their box, or you can buy directly Corteco by Corteco. Also, also, uh, uh, one, one thing [00:31:00] which is good to, for, for our audience, uh, Pay attention what is engraved on the shaft seals. CFW means Corteco, uh, Carl Freudenberg Weinheim, or Corteco or CRTC.
That means Corteco shaft seals, actually Freudenberg seals. Or In one case, it's NOC, Freudenberg NOC, because NOC belongs to Freudenberg also. Yes, you know very well those companies. But, but if I, I, I think, uh, this, this tool you mentioned is very, very interesting and important tool. I want to, again, for people that did not maybe, I think it's fine.
You can put. But I think it's, it's fine. Uh, your seal. Yes. Find your seal. It's one word dot com or it's much easier. Go directly on the Corteco web page. Okay. And on the bottom of the front homepage is actually the two tools. One is [00:32:00] E cut Corteco. It's our electronic catalog. Second one is find your seal.
It's very easy to recognize because a picture of a seal is on it. I think this is a great tool to identify a seal because If you are not sure, at least you can find by size, you can find by OEM number, you can find by application, you have, okay, I have this car, I have this shaft seal, you know, then you can get the suggestions.
You can looking on that way, but it's too long. Find your seal is much shorter. You just put. Numbers and you get you get finally you get this. Now, if if we look at the seal and let's say I am not very sure is this seal or this seal. Is there any way to let's say minimize if I got I put the for example, the size.
I don't know. Maybe the OEM number [00:33:00] I put the size I get three or four seals. How do I, I identify from there? It's, it's very easily because, uh, uh, I mentioned the icons. You have plenty of icons where they apply. For example, uh, wheel hubs, uh, gearbox, uh, either if, if you speak about, uh, higher pressure, oil pumps, for example, uh, power takeoffs.
You have plenty of those icons, you know, exactly from where you take off those seal because it will be really Silly You you take out the shaft seal and you don't know from where They are you just choose those those application and you got directly and also also in the table when you open you can found exact the material From which those, those, uh, parties made it.
If I, if I'm a [00:34:00] maintenance engineer, I finally got the right seals, and I want to do the installation. Now, I think a lot of people think, okay, it's an oil seal. I just, you know, slide it on the shaft. The job is done. But I think when looking this from, from an expert point of view, I think it's, there is an importance to look at because the wrong installation can damage the seal even before any operating hours.
So I want you to give us some, uh, suggestion, advice, ideas on how to install the right way. Yeah, actually, actually, I face with the couple of very interesting ideas how to install actually how not to install the shaft seal, uh, right way in the first row. It's protect the shafts, all the sharp edges on the shaft.
That's that's the first you can use the tool, which is very simple and also could be provided on the market. In [00:35:00] absence of those tools, you can protect with some, some plastic ribbon, very tiny ribbon, for example, x ray, uh, uh, photo, you can cut it, or you, you can buy it in, in a paper store for the, for the laser printer.
That is a very tiny foil. You can make a, some ring put and cover the shaft and over this installed the shaft seal. Also, Never use screwdrivers to, to just improve the, the setup, uh, pay attention. If you found some alternate, uh, solution, uh, about tolerances, always follow the tolerances because, uh, uh, one millimeter is, is, uh, too much.
If you speak about small shaft seal, for example, 10 or 15 millimeters. It's too much. But if you speak about on a shaft seal of 200 or 150 millimeters, that's okay. That's acceptable. And the, the, the [00:36:00] elasticity of the sealing clip can accept this. So, uh, the, another way when you speak also, also of installation, Teflon shaft seals, PTFE.
After installation, of course, it's must be installed with a tool in a proper way with the, uh, covering, uh, uh, always, uh, the PTFE shaft seals is supplied with the, some plastic insert or cardboard insert. This depends on the size of the shaft seal. For example, For, for the, uh, wheel hub application, Teflon shaft seals is just, uh, uh, deliver with some cardboard ring inside, which is used as a, as a tool for installation on the, on the shaft to avoid the damage on the lip.
Yes, exactly. Those kinds of the shaft seal install on a totally dry shaft without oil and need to wait four to six hours. That [00:37:00] the PTFE actually the ceiling lip made of the PTFE rest and touch firmly on the surface. After that, you can start the application, run the truck or start the engine. In any other case, the oil will start to leaking.
Cause I think especially for, uh, PTFE, uh, the material is so special that it requires some time to form it's, you know, let's say to embrace the shaft or, you know, to hug the shaft right away. Because, because they are a little bit, Slow movement, like a snail, you know, you have a rabbit, you have a rabbit and the turtle, you know, that's, that's race.
Any elastic made of the rubber is like a rabbit. Teflon is like a turtle, it needs time to reach the And I think, again, some people [00:38:00] think, okay, um, Maybe the original seal is NBR, but okay, I want to buy a good seal. I will buy a Viton, a Teflon seal. And then they, they put the seal, they start and then, uh, you still have a problem.
I think, okay, but I brought even a better seal. Yes, but they not follow the instruction, how to install it. They just, just put on the shaft without any, any, any protection and nothing. And they. You cannot imagine the, the, uh, damage, uh, uh, if installed without tool. It's so tiny. It's not visible with the bare eye.
You cannot see it. You need, you need to magnify couple of hundreds of times just to see it. It's very, very tiny, but it's enough for oil to get out because layer of oil, which is beneath. Only one micron. It's a 1000 part of the millimeter. It's so tiny. And this is what I say and You're buying a more [00:39:00] expensive, uh, more expensive seal does not mean you are doing the the best thing No, the best solution.
I I think these these, uh, small Technical or, you know, advice are so important, especially because these lips are so tiny and they are so manufactured in such a precision. You damage that by just sliding the shaft or putting, you know, some, some screwdriver to, to, then, then I think no need for the seal because you lose it.
But, uh, that's actually, that's actually pretty good. Point of all of this, they're using a tool to protect the shaft seal, not the shaft. Yes. Also, also, uh, uh, uh, many, many, many of cases was, uh, when they take out the shaft seal from the, from the housing, they using a screwdriver and they damaged the surface of the shaft.
When they damaged surface, it's, it's, it's done. Yes. Shaft seal will not work also. [00:40:00] Because, because the shaft itself have now this dent. Yes. That Cannot be absorbed by the elasticity of the leaf. Not only this, not only this, they will, uh, uh, just behave like, uh, uh, a knife. Yes, like knife and they just, or lathe, you know, and they just cut.
Also, also, uh, one very important thing, uh, when you speak about preparation for installing a new shaft seal, use a brake cleaner and use some, uh, Cellophane. You know what that means? That's some material which usually, uh, uh, housewives using to covering a jar when they preparing some, some jam or something.
So it's so soft. If you use sandpaper, you will destroy the surface of the shaft seal and create a such a nice spiral, like a spiral pump, actually Archimedes pump. Those spirals, it drag out the oil immediately when you start. So this, [00:41:00] this is some problems, which many times the people try to, to stubborn soiling, uh, remove, but they need the patient.
They like this sandpaper on the shelf. It's better to, to put in the desert, just rotate a couple of times. Um, let's say I now already bought the perfect seal. I done follow all the instruction for installation. I put it in this machine. Now, what do I expect for a lifetime of this oil seal? For oil seal, it depends, uh, how they, uh, design for which kind of deprecation, as I mentioned, Costco shaft seal can last 1.
5 million kilometers. Okay. Yes, it's, it's actually a lot of, lot of kilometers. Can you imagine if some, some of the trucks it's running all the day, right? Let's say 24 hours, they can pass [00:42:00] close to 150, close to 200, 000 kilometers per year. They're just changing the drivers. They're not changing the trucks, but changing the drivers.
Can you imagine? That's in the five, six years, but before you replace the, the Costco shaft sealing engine, you need to replace many times the shaft seals in the axles. Also, I mentioned, mentioned that the shaft seals for the, for the, uh, heavy application Costco, 4, 000, uh, for the engines. If you install it's as a manufacturer of engine predict when need to, to replace in a gearbox also.
In many cases, uh, I don't know. I've just example, 100, 000 kilometers to replace the shaft seal on input shaft with the sleeve, because this is a period when you need to replace the clutch also very important on engines. When replacing the timing system is a one, one [00:43:00] of the, of the major maintenance. It's mandatory to replace the shaft seals.
On the crankshaft, on the camshaft. Why? Also, also from opposite side. When you're replacing the, uh, clutch set. When engine running, shaft seal and the crankshaft lives in such a harmony. They wear out, they know each other how they moving. But, when you replace and just distract this, this bondage. You distract the touching points.
And you create some, some gaps. When you start again, they start to leaking again. And because of that, every single engine manufacturer, especially for the new engines, new generation of engines, mandatory, uh, ask to replace those shaft seals for those operations. Can you imagine when you replace the, the clutch set, which [00:44:00] costs a lot of money?
And not replace the shaft seal, which is made of PTFE, who will pay the, the Another maintenance cost. Exactly. And not, not only this, who will accept the warranty claim on the clutch? No one. You know, if we, if we, if we look at, at it also, these are again, small details, but they are so, so important. And, uh, if we, if we try to pay attention to this, we can have a very.
long lasting many kilometers to come. Now, let's say I changed the seal on my car, but I don't use many kilometers. Is there any timeline? I said, okay, I can use it for five years, 10 years, 20 years. Uh, is there any timeline if I'm not using this machine or this, this car for a long time? Because sometimes we don't, not everyone is there.
Is a mileage driver. Maybe I use the [00:45:00] car to go to, you know, one or twice a week. I don't get a lots of mileage. Is there any recommendation on the, if you speak about this lifetime, you are on a safe side because, uh, when the shaft seal is in some assembly day in a, such a specific environment, they protect, uh, against the, the, uh, uh, huge drift of the, of the temperature during a year.
Uh, and you can using. For a certain and a long period of time. Okay, maybe you could not reach the mileage because you are the Low mileage driver, for example, five six Thousand kilometers per year, but here is not possible to drive. So so so short So maybe that's just just as as a one example uh after 50, 000 kilometers that means in 10 years of such a driving You need to replace, but without any affection [00:46:00] outside, no oil leakage, no nothing, but this is just advice or you can just try.
But, uh, another thing is shelf life. If the shaft seal is not inside the assembly and you put on the shelf and keeping for a while. Usually if the conditions is ideal, that means the drop of temperature during a year is not more than plus minus five degree, which is not possible here. And of course is always around between 25 and 20 degree, which is normal, like let's say in continental Europe, but, uh, also humidity, humidity, not so.
Over the 60 percent between the 50 and 60 percent and always keep in original package. It could be kept on the shelf up to 10 years with periodical check if the packaging is damaged or if the some some, [00:47:00] uh, uh, changes on on on rubber because, uh, doesn't matter how the rubber is is engineered perfectly or high end quality.
One of the of the most dangerous impact is from the ozone. We cannot avoid it. They all around us in combination with the temperature, you know, very well on the tires on the on the car. Yes. Sunlight, sunlight, extreme change of during a day. Also ozone. After the five years, your tires on the car. It's. For the, for the dump yard, it's fully, fully cracked.
And, uh, and you can have, you can have, even if the tires are not running so many kilometers, but because it's exposed to ozone, ultraviolet lights, uh, shifting of temperature during the year. And even during the day, maybe 40 degrees in the day, in the, during the day and [00:48:00] 20 degrees at night, this is all, uh, um, impact the rubber or the material, the elastomer of the material itself.
And, uh, they just aging prematurely, you know, but, uh, I'm telling you the ideal condition for, for keeping on the shelf five years, five years after five years, you still can, uh, using either after 10 years, but The lifespan and longevity of those, those part, it's not as they knew, which is made it in, in, okay, install after the few months after the production.
So they, they able still to use, but not expect the, the one year to, to use. Just to, just to make some patch to go and install a new one, a proper one. At the end, it will not be the same as, as a new seal. And, uh, but I was asking this because I think it's, it's also important how [00:49:00] we store it, how long time we store.
Um, because this is even if you have a new seal, if the seal is 20 years old, maybe it's not not suitable for any any usage always. That doesn't matter if you speak about seals, but also also other rubber rubber products like like belts, for example, timing belts. For sure. Keep away from a dusk. Keep away from a direct sunlight.
Direct sunlight is, is worst, worst condition for the rubber. And second, try to, to put in some corner where the less changing of the temperature. And not to keep it for a 10, 15, 20 years. It's, it's not okay. But okay. If you keep it for a six months to one year, it's no big deal. Of course, if previously it's not was stored for 10 years, of course.
So Alex, when we look at the seals, uh, let's say I, [00:50:00] I installed the right way. I have some seals. Do I need to do any maintenance on these seals? No, no, just, just, if you, if you done everything correctly and under the instruction, you don't need it until they, you spot the, some, some very small leakage and then just following and the leakage become intensive, then you replace it.
Also, also when you replace the shaft seal, check mandatory, check the, what is behind, maybe from the some other reason. Those seal is start to leaking. For example, maybe the higher temperature of the oil inside, maybe the some, some, uh, shavings, metal shavings is for example, uh, in the gearbox or in, in a wheel hub reducer.
If the gears start wearing, they producing a very, very fine, uh, uh, uh, metal shavings. Those shavings [00:51:00] harm directly very badly. Yes, and directly the, the sharp seal doesn't matter. If you not check this and you put new one, you will get again the problem again. Um, if we look at, um, sometimes or some maintenance engineers or maintenance guys, you know, they, they like to put some kind of grease or lubricant before they slide the, uh, okay.
Always the same question. Uh, when the. All the materials was, uh, was, uh, uh, used for the shaft seals. That was one of a way how to install, but if you use tool as explained. You not needed to lubricate excessively the shaft seal. You just need to lubricate the part where the shaft seal will be installed.
They could easily with those sleeve, just put in this zone and that's it. In some cases, uh, where [00:52:00] is the prediction to, to, for a, uh, higher temperature on the dust lip. There is, uh, uh, there needs, uh, some grease, but it's not any kind of the grease. You need to use a special grease for the lubricating the, the, uh, uh, uh, dust lip on the shaft seal.
Usually we use the, the grease, uh, uh, the name is Petamo 133. Uh, which, uh, uh, can withstand with a 230 degree. It's really high. It's Greece for the, for the very specific bearings. You know why I ask this question? Because sometimes. Of course, sometimes we need to lubricate the lip because also to reduce the temperature and it's help us to maintain the lip.
But, uh, sometimes we see they putting any, any types of grease. No, no, no, no. And that, that will again damage the properties. One problem, one problem. Uh, I [00:53:00] know, I know you, you are also, also dealing with the grease, uh, especially for the bearings and the, for, for the special kind. Uh, Only, uh, what you need to pay attention on the technical data sheet, uh, dripping points.
Why dripping point? If the oil creating some, some drops when they start to melting, it's very dangerous because those drops can first attract the dirt from the oil. environment. And the second, because they are much higher viscosity than oil, which is inside, then they just, uh, uh, get beneath the sealing lips and create the gap and oil get out.
So not always, uh, advisable to use any kind of the grease, very specific and always, always. But Uh, when the shaft seal need to be, uh, uh, with some grease, uh, they come from the factory, actually from us, [00:54:00] pre greased. It's pretty, pretty replicated. I have seen, I have seen that. It's already in, in, in, inside.
This is, uh, uh, uh, particularly useful for the, for example, application on the, on the wheel hubs, uh, for the wheel bearings. And also in some cases, in some cases, but very rarely for the, some, some, uh, crankshaft seals. Very rarely. But this is for some very specific application, which is not interesting for us as automotive.
No, I think, I think, uh, it's important that yes, we have many different and good types of greases. But when it comes to oil seal, we have to reuse the right, the right grease or the right lubricant for that. Otherwise, again, you have an impact on the sealing technology. Also, also not, not only dripping point, but also the quality of, of grease.
Doesn't matter if they high quality but They can chemically harm the material. Maybe those rubber [00:55:00] is not resistant on those kind of ingredients and additives, which is inside the grease. Always advise if you want to use something like this, okay. With the dripping points on a highest as possible, uh, temperature, they just put on, on a some, some parts, which is not important for sealing and just to check or on the, on the old seal.
If there is some changes on the surface, please don't use now. Um, sometimes we have industrial application seals. We have automotive, even on the automotive, we have different, uh, application in the car. We, a crankshaft is different than wheel bearing. Some industrial seals have many different, um, if we, if we look at what is the main difference between what we call an automotive seal and a general industrial seal.
If we speak in that direction, uh, [00:56:00] we can speak first about pressure. Automotive seal and some industrial application, most of industrial application working on the low pressure. Up to one bar that's very low and we can exchange. We use plenty of seals, which can, uh, uh, they have a, uh, uh, both use in industrial and automotive.
But when we speak about medium pressure between one and 10 bar, there is another story then we use in automotive. Very specific and very small, uh, amount and codes. For those kinds of the seals, for example, uh, we need for the steering racks, for the power steering, where is the higher pressure than on engine or, or on gearbox.
And of course, if we speak about really high pressure, 10 bars and up to. 300 400 like on construction machinery or hydraulic. That's totally different story. Uh, our in inside the Freudenberg sealing [00:57:00] technology, there is, there is a two, uh, uh, divisions, actually factories, Simrit and Merkel, which dealing with, uh, this, this range of the seals, which is for the high, very high pressures.
So when you speak about automotive and industrial, we can freely say, uh, that they share. Up to low pressure. You know, uh, we, in the market, there is general perception about this. We can use this. We cannot use, I'd like, we, we have to like bust some myth. Uh, we want to, like, I will tell you a few, few things that people have a perception and you, you tell us if you think it's correct or not, or this is true.
Uh, so one, uh, one general, uh, perception that the most important size. Material, profile, or application doesn't matter. Dimension is, is only one [00:58:00] factor. We start with this. The second is application, because application, uh, uh, mandatory, uh, uh, uh, give us which kind of the material. Use for the shaft seal. So only by dimension, it's not possible.
And, uh, the third thing is just design of the shaft seal. It's not the same to use, for example, uh, for the wheel hub on the front wheels, classic radial shaft seal without axial sealing, we also have such, such a kind of the shaft seals because you need to protect completely the shaft seal against the, the some, some, uh, dust, which came from the brake.
Show it's not the same. Exact application needs exact the shaft seal showed that the size doesn't matter or whether yes, but just as as a first point, yes, [00:59:00] no, no, another another perception we have. Sometimes we see, okay, uh, Let's say a customer requests for specific size and we say, ah, we don't have the size said no, give me anything plus minus one millimeter.
No problem. As I, as I mentioned at the beginning, one millimeter, uh, it's no big deal on, on the bigger size, but when we speak about small size, We need be a really precise. If you speak about shaft seal, uh, for the shaft of 10 millimeters, the tolerance almost zero, almost zero. And you need, you need to use a precise dimension.
Uh, if you speak about shaft seals of 900 millimeters. Five millimeter tolerance is okay, is acceptable. Can you imagine, can you imagine the shaft seal of 15 meters diameter? Which we able to produce. Okay, okay. The tolerance. It will be different, of course, of course. But for smaller size, I think it's important.
It's not possible. [01:00:00] Example, okay shaft, but what about housing? Instead of 20. 5, you, you want to use 20 millimeters. What with additional 0. 2 millimeters, which is a gap. There is a leakage, not possible to use a silicone. What if it's a smaller shaft seal is smaller. Opening is a bigger, but if, if the opening is smaller and shut is a bigger.
You will just peel off the rubber, yes. So, so, uh, another, again, these are, uh, I think they are very, very interesting, you know, just for people to know. Um, a lot of people think, okay, NBR is the most famous rubber, it always works. Try to use the NBR short seal in washing machine. You will get the detergent and the dirty water in your, in your, uh, washer, washroom.
So, uh, uh, it's always, always, uh, [01:01:00] I will repeat many times. Uh, the rubber, uh, actually the material for the shaft seals is depend of the application. MBR is good for the, for the some application like, uh, slow moving. Okay, if you speak about very old application, uh, I don't know Caterpillar, which is old, uh, 40, 50 years, MBR was used in those time, but if you speak about Caterpillar, which uh, producing today.
And we are is used on a very few spots. Vitton, Teflon, it's a materials which use on, on, on a modern machine, modern engines. I just mentioned Caterpillar because it's one of, one of my, my, uh, beloved, uh, brand, you know, I love the, the construction machines, uh, but we can speak also about cars. If you have some very old car MBR.
And ACM was, it was a common use in those time [01:02:00] means the car switch all timers over the 40 years old, but today can imagine on, on, on some, some new Nissan Mitsubishi or, or, or some Toyota, there is a new materials. It's not possible to, to exchange, especially because of, uh, speed of, uh, rotation, it's extremely high speeds.
And extremely high. For example, one example, uh, uh, comparing with the, between the Vuitton and MBR. Same size of the shaft seal. MBR can consume 200 watts from the crankshaft.
VTON can consume only 40, maximum 50 watts. For cooking a soup on a stove, you need 8 watts per square centimeters. Then you calculate 200 watts. Uh, width of the, of the sealing, uh, edge, uh, in deformation [01:03:00] is 0. 2 millimeter maximum. Can you imagine those surfaces When you calculate with 200 watt, how many is per square centimeters?
You can burn the whole building with this. It's enormous, extreme because of that is new material is just introduced in the, in automotive industry, uh, to decrease the friction and improve the efficiency of, of the engines actually. Equal decrease the fuel consumption decrease the pollution and so on I have one one very very interesting when we sell sometimes the the wheel bearing kits And usually this wheel bearing kits comes with the bearing the seal and some other components.
So the the the the maintenance can easily Change all and, uh, sometimes we have again. This [01:04:00] is another myth. I want your expertise and said, No, no, I will not use this seal. I will use the original one.
Okay. Okay. Let's say something about this. Uh, I also also also got such a question from from from the on the field from from the guys. Okay. You know, I am just, just install a new, new shaft seal, but I forgot something to do behind. Uh, can I take it out and install again? No shaft seal is only for the one installation.
Doesn't matter if the original and especially if they, if they run, uh, I don't know for, for the five years, five years, it's not possible to install again because they were out completely, the, the, the material is changed, uh, physically, chemically. So, but if you install and finished, you finished, but if you forgot something, for example, you [01:05:00] install the bearing and you forgot to, to, to say in a clip just to secure the bearing and you take out the shaft seal.
Throw it and use new one and install new one. So, so never reuse. Never, never. It's, it's only, only like, like, like a rocket. It's a one time use. Shot and forgot. Yes. Um, uh, now we, we spoke about the, I mean, this is a very interesting topic. I think topic we are discussing, and I think definitely our audience is is is liking what we are because it's covering the ceiling a bit deeper.
Um, I think we are moving into an era of electrical vehicle connected new. The speed of the cars are different. The speed of engine. How do you see that? What will change in the seals or what is the evolution of seals? Actually, actually materials, uh, going in direction of different, different type and [01:06:00] different design.
Uh, one of our, uh, uh, design, which firstly, uh, made it for the Internal combustion engine is levitex. Actually, this, uh, uh, dry gas sealing solution, uh, I could explain for audience because I don't, I couldn't, uh, show them, uh, video clip. On video clip, it's very easy to, to understand. Uh, you have on a rotational part of the seal, you have some, some, um, Vans like on turbo compressor.
When crankshafts start to rotating those ones, uh, creating a pressure, which is a roughly 0. 3 bar above atmospheric. It's enough to move a static part a little bit and making a such a small gap. So the friction is almost zero. Those kind of the shaft seal is, is just consume only five watts, which is nothing.
Less [01:07:00] consumption is, is lead diodes on, on, on a dashboard, not on the headlights. So that's one of the trend. Also the materials which use is, is high end materials because of elasticity and durability. Those kind of the shaft seals can last as the engine. without any problems. Also, the, the, another improvement, uh, especially when you speak about electrical cars is a materials, which is electrically conducting, you know, very well, uh, problems on, on wind generators.
There is electrostatic, uh, erosion on, on, on the bearings, which is really dangerous and cost a lot of, uh, few years ago, uh, the Siemens asking from us to, to making such material, which is It's actually almost without resistance and can conduct the static charging directly to the ground just to protect the seals.
The same [01:08:00] technology we use today for the bearings in electric motors and electric axles. Another material, another product is between the sealing and supporting is something like a thrust washer. We call it levy torque. It's using in electric axles as a washer, and also Levitas is one kind of the seal and support on the shaft of the electrical axles.
That's some of the new technologies. Another step is, is okay, in a static sealing. Uh, we producing, we producing, uh, for example, the folding gaskets for the battery compartments on the electrical vehicle. It's one of our patents. Can you imagine how could be a tool to making a [01:09:00] 1. 8 meter by three meter seal?
It's a huge, but our engineers just. Uh, uh, get, get in a, in a, in a, uh, got some idea, uh, and making a folding gasket, actually edge bonded. And you can make it in a very small mold when you spread you got you got what you need and also also Very important when you speak about that. Uh, it's compression set compression set for the rubber means uh, uh, uh Possibility, uh, not possibilities.
It's uh properties of rubber when you put under the pressure Certain period of time under a certain temperature and when you release those pressure You You measure the height of the, of the material. Those rubber, which we use for, for the, those cover and those gasket is actually 99 percent same [01:10:00] like in original.
So you can reuse many times. Okay. It's very important. So it's okay to use, it's okay to use a static, a static seal again, but not a shaft seal. For example, cylinder head gaskets, but also, also very important when we speak about static gaskets for the different kind of the covers on engine, uh, we pay a lot of attention of quality of the rubber and those compression set just to reuse the gasket again.
But of course, if the. Uh, by the maintenance following the instruction about tightening torques and everything to not deform the covers if the phone recovers, doesn't matter about finish quality. Yes. Okay. I think we have spoken a lot about the seal. But We sell a product of corteco that it's not a seal but very related to seals and I wanted you your [01:11:00] expertise and explain Which is the silicon paste, you know You have two types of silicon paste, which is very very popular the ht300 and the evo300 Tell us a little bit about the ht100 and I think the revolution and the evo300 Okay Thank you At the first, uh, both silicone paste can withstand with 300 actually working on 300 degree, uh, under the peak, they can withstand with 320 and something more, but 320 for the peak.
That means 10, 15 minutes, no more, but 300 is, is normal working temperature for those. Uh, HD 300 is actually, uh, artificial. Compound evo 300 is organic as I like always to say and and I'm really proud on that We always try to use as much as possible [01:12:00] uh natural and organic components in our products because Elastomer as elastomer is not easy to recycle Uh, even, even for the, for the shaft seals or for the, some, some vibration control element, we use the, the organic compounds, which give us possibility to recycle even close to 70 percent of those products.
Nice. Nice. When you use some artificial maximum percentage is 20, 25%. So with our rubber, it's no problem to recycle. Okay. We take a care about environment. So, uh, to continue with this, um, uh, ever 300 could last, uh, with the higher pressure, for example, for, uh, engine is running on, on, uh, uh, natural gas on liquid petrol gas.
It's precious about 22 bar, we speak about them, uh, HHT 300 is mostly for the petrol [01:13:00] engines and for the diesel engines. Uh, they also resist, uh, on the fluids, Evo 300 is resist off on all kinds of the fluids you can found on the engine. Even on the salty water. Okay. Which is you can found on the boats or on a seaside.
Mm. Also, also, uh, VO 300, uh, uh, VO 300. Uh, they are very easy to apply. Mm-hmm. They can use the assembly after, after the, the reassembly. Uh, you can use after the 15 minutes. Also, you can apply without disassembling the components. For example, most, uh, uh, most of the problems, uh, on the mechanics. On the garage is leakage on a water pump As an example not necessary to to disassemble If they leaking on on a flange on on an area where is the connect with the with the engine [01:14:00] block clean it Apply the evo 300 Just making a smooth surface waiting 10 15 minutes Plastic, aluminum, uh, cast iron, uh, steel, inox, they stick on any kind of the surfaces.
But what is the best story about this? When you disassemble the parts, You can easily peel off without any remains, which is not the case with many of other, other, uh, silicone paste. Also, uh, I got information from, from the, uh, mechanics from the field. When they apply, you know, it's always when you, when you squeeze, there's something is get out.
And when they, they cure, they try to, to tear just to making a aesthetic. Yes. On many, many competitive, uh, silicone paste, they just take out from, from the [01:15:00] assembly. But with this one, when they tear it, they remain inside the assembly. So it's, it's one, one of, uh, maybe most advantaged by the mechanics, but they're not looking completely, but they, they price, uh, those, those silicone paste first time where they start to use, you know, like this, this.
Evo 300 is so popular that, uh, you know, sometimes I'm not sure what they are using. Is it toothpaste or they're using it so much and they are in love, in love with it. They love, they love use, use silicone paste everywhere and any kind of the silicone paste because, uh, they try to solve, solve the problem at the moment, but it's not, not the solution.
Silicone paste doesn't matter if you speak about Evo 300 or, or some others. It's always advised to use as [01:16:00] the manufacturer predicts surface or, or assembly where to use on a modern engine. When we have, uh, where we have, uh, some aluminum oil sump, there is always goes with the silicone, you know, if there, if somewhere is, is a gasket, flat gasket.
Silicon not needed to use, but okay. They always try, try to, people try, try to solve the problem, uh, immediately when they appear. What they have at hand, silicone, yeah, silicone paste, but okay, uh, aside, uh, in, in a modern design of the engines and also, also vehicles, uh, the engineers, uh, use on a lot of spots and a lot of parts, they're using the silicone because, uh, when they calculating it's much easier.
To put the silicone then creating [01:17:00] some gasket gasket need a tool gasket needed need some some storage compartment special packaging Avoiding the the damage but the silicone it's very easy to apply with a machine in a very tiny quantity Okay. It's, it's not put the one centimeter if they, they predicted two millimeters and so on.
Uh, so maybe because of that, they use a lot of, but they like it. And, and what, what makes the, uh, I know I got some comments from, uh, some mechanic, uh, they, they, they love the color. I mean, is it different than the HT 300? Yes. I, I know also about this. Some, some of them don't like the red color, uh, Uh, some of them don't like the, the black collar.
Uh, one of the guy just came to, to me and asking me, do you have the white silicone paste? Yes, we have it, but this HT 200, yeah, it's lower temperature, but okay. They use on, on some, some, [01:18:00] uh, uh, spots and places where the temperature is not reaching above the 150 to see somewhere. So it, it's perfect. It's perfect for use, but you know, as many people, as many, many.
But is there a color difference between the HT 300 and EVO is black color, HT 200 is white color, and EVO 300 is anthracite gray, dark, dark gray, which is really appreciable when you attach on the engine or gearbox. It's aesthetically looks. Yes, it's blending. Yes, yes, yes. Alex, it's really fun to have you here.
I think, uh, this, this episode comes to an end, but, uh, I would like to thank you very much for your time, the valuable information. Uh, I know you come all the way from Europe for this podcast. Thank you very much. Any final words? Any [01:19:00] final words? It's, it's nice to be among the friends and, and, uh, I'm really enjoy in this, this, uh, episode.
And it was my, my honor. I'm honored to, to be your guest today. So thank you, Alex, for a wonderful time. You guys, thank you very much for following us until next time, keep spinning towards success.
And that wraps another episode of Wiki bearings. Don't forget to subscribe for more insights into the fascinating realm of the engineering innovation. Until next time, keep spinning towards greatness.