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What is oil seal?

November 21, 2022

   Oil seals are mechanical parts used to seal oil (oil is the most common liquid substance in the transmission system, and also refers to general liquid substances). It isolates the transmission parts that need to be lubricated from the output parts to prevent oil leakage. Both static or dynamic seals (usually reciprocating) are called seals. The representative form of the oil seal is the TC oil seal, which is a double-lip oil seal, and the self-tightening spring is completely covered by rubber. Generally speaking, the oil seal usually refers to this kind of tc skeleton oil seal.

 

What material is the oil seal?

 

The oil seal is made of rubber. Oil seals are mainly used for the joint part of two lubricating parts to prevent oil leakage, such as crankshaft oil seals, half shaft oil seals, gearbox oil seals, etc.

 

What is a skeleton oil seal?

 

Skeleton oil seal is a typical representative of oil seal. Generally speaking, the oil seal refers to the skeleton oil seal. The function of the oil seal is usually to isolate the part of the transmission part that needs to be lubricated from the output part, so as to avoid the leakage of lubricating oil. The skeleton acts like the steel bars inside the concrete element, it is used to strengthen and maintain 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 auxiliary lip of the double-headed skeleton oil seal acts as a dustproof, preventing dust and impurities from entering the inside of the machine. According to the skeleton type, it can be divided into inner skeleton oil seal, exposed skeleton oil seal and assembled oil seal. According to the working conditions, it can be divided into rotary skeleton oil seal and reciprocating skeleton oil seal. Skeleton oil seals are usually used in gasoline engine crankshafts, diesel engine crankshafts, gearboxes, differentials, shock absorbers, engines, axles, etc.

 

What is the general material of the skeleton oil seal?

 

The general materials of the skeleton oil seal are divided into: nitrile rubber (NBR), fluorine rubber (VITON), silicone (SIL), nylon (PA). These are the most common materials, and of course PTFE Teflon oil seals and Skeleton oil seals, etc.