There are several different types of shaft oil seals, including lip seals, mechanical seals, and labyrinth seals. Lip seals are the most common type and consist of a flexible lip that comes into contact with the shaft. Mechanical seals, on the other hand, use mechanical components to create a seal, while labyrinth seals have multiple barriers to prevent the entry of contaminants. The manufacturing process of molded gaskets typically involves the following steps Another advantage is their impact on emissions. Improved combustion efficiency means less unburned fuel in the exhaust, contributing to cleaner emissions and better environmental sustainability.