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- O-Rings These are circular seals that create a tight fit between two surfaces, preventing fluid leaks. They are usually made of durable materials such as nitrile rubber or polyurethane.

A skeleton oil seal, also known as a metal casing seal or a rubber oil seal with a metal reinforcing ring, consists of an elastomeric material molded around a metal skeleton. This design provides enhanced stability and durability compared to traditional oil seals. The metal skeleton not only supports the seal but also adds structural integrity, allowing it to withstand higher pressures and temperatures.