Auto Oil seal structure
Oil seals in the motor, including the engine and other critical components, are essential for maintaining the integrity and efficiency of the vehicle. These seals are designed to contain lubricating oil and prevent leaks, contributing to the smooth operation and longevity of the motor. Proper maintenance and replacement of oil seals in the motor are crucial for the reliability and performance of the vehicle's systems.
JTEKT provides special seals for use in a wide variety of machines and applications.
Table 5 lists the major special seals, their shapes, and their features.
EPDM oil seals are less common. They are used in solvent, hot water and steam applications, EPDM resists low temperatures down to -50 °C and UV radiation well. Some types of EPDM are also suitable for higher temperatures up to +150 °C. EPDM oil seals are usually available upon request.


H7 or H8
2. If the nominal bore diameter exceeds 400 mm:
H7


FKM or FPM, which is in well-known brand Viton™, can withstand higher liquid temperatures of up to 180 ˚C. FKM is highly resistant to strong acids and bases, as well as to synthetic oils and greases. Glycol-based oil and grease, however, can also damage FKM.


What material are oil seals made from?

Among the most common causes of oil seal failure are: