...
2025-08-16 05:48
1888
...
2025-08-16 05:47
2683
...
2025-08-16 05:46
1577
...
2025-08-16 05:35
521
...
2025-08-16 04:50
2007
...
2025-08-16 04:45
56
...
2025-08-16 04:39
119
...
2025-08-16 04:09
405
...
2025-08-16 03:55
1005
...
2025-08-16 03:20
2785
- Once the seals have been molded, they undergo a series of quality checks. This includes inspecting their dimensional accuracy, surface finish, and physical properties like hardness, elasticity, and tensile strength. Any defects, however minute, can compromise the seal's performance, hence the importance of rigorous testing.

The first material that we are going to look at is Nitrile Buna- N 70 or NBR for short.
Another type of seal design has the metal encased in rubber (Figure 2.11).

front valve cover gasket. Once the old gasket is removed, the new gasket can be installed and the valve cover reattached to the cylinder head.