oil seal, also known as a shaft seal, is a fundamental component used in machinery to prevent the leakage of fluids such as oil or lubricants. It is installed on rotating shafts or axles where it creates a barrier between the stationary housing and the rotating shaft. The primary function of an oil seal is to maintain proper lubrication by preventing fluids from escaping and contaminants from entering critical components. This helps reduce friction, wear, and the risk of mechanical failures in various industrial, automotive, and marine applications. Oil seals are typically constructed with an outer metal case, an elastomeric (rubber) sealing element, and often include a spring to ensure proper sealing pressure against the shaft.
Component | Function |
---|---|
Outer Metal Case | Provides structural support and rigidity. |
Elastomeric Sealing Element | Forms the primary seal against the rotating shaft. |
Spring | Provides radial force to maintain sealing pressure. |
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