Oil seals are made from multiple compounds and materials. Some of the oldest, still in use today, are leather and felt compounds. The trend in mass production, however, has seen a move towards synthetic rubber or elastomers. Nitrile is by far the most popular material but developments in PTFE have created a surge of interest in buyers needing seals for high-speed shaft rotation applications. Viton is taking over from the polyacrylic and silicone, as it works better in high-temperature applications and has a high-resistance to abrasion and harmful chemicals.

Tighten all fixings in sequence to the correct torque (consult a service manual or dealer if you are uncertain of the torque).

Oil seals are used in many areas around the car.
Figure 6 shows the places where each seal type is used.

5. Conclusion

Aspects to consider when selecting oil seals

Check the materials and surfaces

For a more detailed discussion of seal characteristics, please see the following:
Seal characteristics