1. Sealing Lip: This is the most critical working part of the oil seal. It is usually designed with a specific lip shape to maintain close contact with the surface of the rotating or reciprocating shaft, forming an effective sealing band.
2. Metal Skeleton: Serving as the support structure of the oil seal, it is usually made of steel plate encased in a rubber body. It provides the necessary strength and rigidity to ensure the oil seal maintains its shape stability during installation and use.
3. Spring: Many oil seals are equipped with a clamping spring behind the sealing lip. Its function is to apply continuous radial pressure to the lip, compensating for gaps caused by lip wear or slight shaft eccentricity, and maintaining a stable sealing force.
4. Rubber Body: Encasing the metal skeleton, it forms the main body shape of the oil seal. Its material determines the oil seal's resistance to media, temperature, and elasticity.
