skeleton oil seal

Skeleton oil seal is a sealing component for rotating shafts with a metal skeleton, mainly used to seal the oil in the rotating parts, prevent oil leakage, and block external dust and mud from entering.

structural characteristics

There is a metal skeleton inside, which plays a supporting and shaping role, and is not easily deformed and has stable sealing after installation

The outer layer is usually made of rubber, tightly attached to the hole wall; Lips tightly adhere to the shaft surface, relying on their own elasticity and spring to hold tightly

Most of them are equipped with tightening springs to ensure that the sealing lip always fits the shaft surface, resulting in better sealing

Common materials

Nitrile rubber (NBR): commonly used, oil resistant, wear-resistant (based on actual reports), good cost-effectiveness

Fluororubber (FKM): High temperature resistance (based on actual reports), oil resistance, aging resistance, used in high-temperature working conditions such as engines and transmissions

Silicone: resistant to high temperatures (based on actual reports) but not wear-resistant (based on actual reports), often used for low temperatures, oil-free or special working conditions

Applicable scenarios

Sealing of rotating shafts for motors, reducers, water pumps, and fans

Automotive engine crankshaft, camshaft, half shaft, differential oil seal

Rotating parts such as construction machinery, hydraulic equipment, and machine tool spindles

Mainly used for oil lubrication parts, belonging to dynamic seals