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2. Keep Contaminants Out Dust, dirt, and other foreign particles can cause severe damage to machinery. Oil seals act as barriers, keeping these contaminants from entering and prolonging the life of the equipment.

The functioning of double lip oil seals is based on the principle of hydrodynamic lubrication. When a shaft rotates, the primary lip establishes a contact with the shaft surface, creating a micro-film of lubricant that facilitates smooth operation. This film reduces friction and wear, allowing the seal to maintain its integrity even under high-speed conditions. The secondary lip plays a crucial role in enhancing the sealing efficiency by reducing the chances of oil escaping and contaminants entering the sealed environment.