Oil seal is a mechanical element used to seal oil. It isolates the parts that need lubrication in the transmission parts from the output parts, so as not to let the lubricating oil leak. Static seal and dynamic seal (general reciprocating movement) with seals called seals. The representative form of oil seal is TC oil seal, which is a double-lip oil seal with self-tightening spring completely covered by rubber. Generally speaking, the oil seal often refers to the TC skeleton oil seal.
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