However, the new variant also comes with less good properties. Namely less flexibility and less resistance during assembly. Most damages therefore occur during the installation of PTFE oil seals.
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Rotary Wheel Of Auto Parts
6 Things about Oil Seals You Need to Know
Seal type code (*) - The Significance of the B20 Series Valve Cover Gasket
- Rubber, as a material, offers a unique blend of properties that make it ideal for gasket manufacturing. It possesses excellent flexibility, allowing it to conform to irregular surfaces and maintain a tight seal. Moreover, rubber has inherent resistance to chemicals, weathering, and abrasion, which makes it suitable for use in harsh environments. The thickness of the rubber further amplifies these attributes, providing a more robust and long-lasting sealing solution.
ERIKS type M (type B according to the DIN standard) has a single metal casing and rubber sealing lip. Since the casing is made of metal, it must be fitted in a well-finished, undamaged groove. Large volumes of oil seals with metal casings are often cheaper, which is why they are often used as original equipment in machines. However, if an oil seal has to be replaced, types with a rubber exterior (type R or RST) are easier to fit. Type MST is similar to M and commonly used. The difference is the dust lip in the MST oil seal that prevents dust and dirt reaching the sealing lip, and extends its service life in dusty environments.


