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　　Oil seal is used for sealing grease, oil is the most common type of liquid substances in the transmission system, also refers to the general liquid substance) mechanical components, it will need lubricating parts and transmission parts output component segregation, unapt let lubricating oil leakage. Static seal and dynamic seal seal called sealers (general reciprocating motion). The representative of oil seal in the form of TC oil seal, this is a kind of rubber coated with the full spring lips oil seal, the general said oil seal often referred to as the TC skeleton oil seal.

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