DIN    

This is one of the frequent reasons for oil seal failure, and this is majorly because of the volatility of any of the elastomer’s constituents. These causative constituents may be part of the elastomer formulation, or gases that got entrapped in the elastomer during the molding process. The deceiving fact about this failure is that sometimes the oil seal won’t show any visual sign of out-gassing, however, sometimes when the out-gassing is extreme, they shrink.

Table 5: The major special seals, their shapes, and their features

The piston oil seal is located between the piston and the cylinder wall. Its main function is to seal the combustion chamber and prevent oil from leaking into the combustion area. This is essential for maintaining proper lubrication of the piston and preventing damage due to overheating and friction.