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COMP Cams supplies a full range of valve stem seals from the stock GM O-ring to Positive-Stop PTFE and umbrella styles. These seals prevent oil from passing into the combustion chamber through valve guide clearance. Umbrella seals suit larger-than-stock springs, PTFE Positive-Stop seals are recommended for double-spring setups, and a smaller Viton option is offered for triple-spring applications.
COMP Cams Valve Seals 3/8in PTFE W/.500in
