The most common oil seals are the ERIKS types R, RST, M and MST, which correspond respectively to types A, AS, B and BS according to DIN 3760/ISO 6194.
Special seal types and their features
If the car has a manual gearbox , select first or reverse gear and put the handbrake full on. Otherwise, disconnect the battery and remove the starter motor .
- Regular inspection and timely replacement of the PCV valve cover gasket are integral aspects of routine engine maintenance. Neglecting this simple task can lead to more extensive repairs down the line. Therefore, understanding the importance of this seemingly insignificant component can save vehicle owners a significant amount of money and potential headaches.
- Prevent leakage of sealed lubricant from inside
Jiri George Drobny, in Fluoroelastomers Handbook (Second Edition), 2016
Another important factor to consider is the temperature range in which the gasket will be used. Natural rubber gaskets have a broad temperature range, but it is crucial to select a gasket material that can withstand the specific temperature extremes of your application without losing its sealing properties.
Why Should You Choose Emerson for Your Oil Seal Needs?
-35 °C to + 100 °C


The material of the sealing lip is chosen according to the liquid to be sealed and the rotational speed. For larger shafts, an NBR sealing lip can cope with surface speeds of up to 10-12 m/s, while an FKM lip is suitable for speeds of up to 35-38 m/s.


Construction of an Oil Seal

Oil Seals – Everything You Need To Know About
Oil seals come in various shapes to fit the machines and substances to be sealed.
Figure 2 shows the structure and the names of the various components of the most typical oil seal.
The functions of the various components are also indicated in Table 1.