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Engine oil seal
Engine oil seal：The engine crankshaft oil seal is a key component to prevent oil leakage from the engine, and its importance has been increasingly valued by various engine manufacturers. PTFE has the characteristics of high temperature resistance, corrosion resistance, non-stick, self-lubricating, excellent dielectric properties and low friction coefficient, and is currently one of the main selected materials for the production of oil seals. However, untreated PTFE has poor surface activity and its adhesion to metal is very difficult. The traditional process method is to use sodium naphthalene solution to treat the surface to increase its adhesion performance, but it will form pinhole and color difference on the surface of PTFE and change the original performance of PTFE. Low-temperature plasma surface treatment not only activates surface-reinforced bonding, but also maintains the material properties of PTFE.