Skeleton oil seal is a typical representative of oil seal. Generally speaking, oil seal refers to skeleton oil seal. The function of oil seal is to isolate the parts that need lubrication from the external environment so as not to let the lubricating oil leak. The skeleton acts as a reinforcing steel bar in concrete members, and keeps the shape and tension of the oil seal. According to the structure, it can be divided into single lip skeleton oil seal and double lip skeleton oil seal. The accessory lip of lip skeleton oil seal acts as a dust-proof function to prevent dust and impurities from entering the inside of the machine. According to the skeleton type, it can be divided into inner skeleton oil seal, outer skeleton oil seal and assembly oil seal. According to working conditions, it can be divided into rotary skeleton oil seal and reciprocating skeleton oil seal. For gasoline engine crankshaft, diesel engine crankshaft, gearbox, differential, shock absorber, engine, axle and other parts.
Rubber Oil seal consists of three parts: the seal body, strengthen the skeleton and the self-tightening spiral springs.The role of oil seal of the transmission components in general is in need lubrication components and parts output isolation, and typically used for rotating shaft is a rotary shaft lip seal. It can be divided in the seal, the outer seal, the inner and outer exposed skeleton oil seal.