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In machines, a device that prevents the passage of fluids along a rotating shaft. Seals are necessary when a shaft extends from a housing (enclosure) containing oil, such as a pump or a gearbox. Leather, synthetic rubber, and silicones are among the materials used for the sealing ring. See alsobearing.
Variants of OIL SEAL
oil seal or shaft seal
This entry comes from Encyclopædia Britannica Concise. For the full entry on oil seal, visit Britannica.com.
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