This type of oil seal can withstand only low speed and friction. It is recommended in places where thick fluid or grease is to be sealed. This is not recommended for difficult applications.
- Among the different types of oil seals available, the 25, 35, and 70 oil seals are some of the most commonly used sizes. These seals are designed to fit shaft diameters of 25mm, 35mm, and 70mm respectively, providing a secure and tight seal to prevent leaks.
Rubber type
Gasket Valve Cover: Selecting Quality Components

Oil seals are found in a wide range of applications, in virtually every industrial sector. It is essential to select the correct oil seal so that the application in which it is used can run efficiently, free of leaks or other issues. In this blog, we explain which factors you should pay attention to when selecting the best oil seal for your application.
<Seal selection example>
Based on the above flowcharts, the oil seal type that meets the requirements shown in Table 3 would be the type code MHSA or HMSA shown in Table 4.
Why do I have to install my Oil Seal this way?
Use a flat paint scraper, or the smooth side of an old hacksaw blade, to remove very carefully all traces of carbon and old gasket from both faces.