There are several types of automotive seals, including:
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O-rings: circular seals that fit into a groove and compress when the two halves of a joint are bolted together.
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Gaskets: flat seals made from materials such as rubber, cork, or metal that are placed between two surfaces to prevent leakage.
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Lip seals: dynamic seals that use a flexible lip to seal against a moving surface, such as a shaft or piston.
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Mechanical seals: seals that use a stationary and a rotating component to create a barrier between two fluids or gases.
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V-ring seals: seals that have a tapered cross section and are used to seal against a shaft or housing.
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Oil seals: seals that prevent the leakage of lubricants or other fluids from a rotating shaft or other moving part.