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The manufacturing process of oil seals involves several steps, starting with the selection of the raw materials. Synthetic rubber is the most commonly used material for oil seals, as it offers excellent sealing properties and flexibility

25 47 7 oil seal. Metal oil seals, on the other hand, are preferred for high-temperature applications where resistance to heat is crucial.

25 47 7 oil seal. Metal oil seals, on the other hand, are preferred for high-temperature applications where resistance to heat is crucial.
The design of an expansion spring is relatively simple, consisting of a coil of wire that is wound tightly together in a helical shape. When a force is applied to the ends of the spring, the coil is stretched out, causing the spring to expand. When the force is removed, the coil contracts back to its original position. The amount of force required to stretch the spring and the distance it will expand can be adjusted by changing the size and thickness of the wire, as well as the number of coils in the spring.