

Figure 4: JTEKT oil seal features

Oil seals normally consist of three basic components: the sealing element, the metal case, and garter spring.
Most ERIKS oil seals, such as the types M, MST, R and RST, are made of NBR as standard.


Waterproof Rubber Gasket: Ensuring Protection and Reliability
Standard petroleum oil has a lifespan of 30 years at 86 degrees Fahrenheit if it’s not

• More compact thanks to the thin plate (uses a high-strength steel plate)
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.

Figure 3: Sealing function of main lip radial load
* KOYO is a registered trademark of JTEKT.
An oil seal consists of:
These cassette seals are widely used in wheel-end applications, such as the axles of agricultural machinery or off-road trucks.

7. Selecting high-quality oil seals
Oil seals are used in many areas around the car.
Figure 6 shows the places where each seal type is used.