Most oil seals consist of some basic elements that configure their structure, such as the sealing element, the metal case, and the spring:
Manufacturing and Quality Control

The Ultimate Guide to Oil Seals
Regular inspection and maintenance of right valve cover gaskets, intake valve cover gaskets, head gaskets, and valve cover gaskets are essential to identify signs of wear, damage, or leakage. Proper replacement of worn or damaged gaskets is crucial for maintaining the integrity and performance of the vehicle's systems. Adhering to recommended service intervals and using high-quality replacement components are essential for optimizing the performance and longevity of the vehicle's gaskets.
Sealing process
Table 2 a): Common types of oil seals (with spring)
This represents a new generation of oil seals.
Choosing Quality Industrial Oil Seals
(This prevents failure during mounting.)
Double metal cased
NBR
For more detailed information, please see the following:
Heat resistance