COMP Cams Valve Seals 11/32-.530 MetalCOMP Cams offers a complete line of valve stem Seals, from the stock GM O Ring to the positive stop PTFE Seal. These Seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The O Ring Seals use the standard retainer and oil splash shield. The umbrella Seal is normally used when a larger than stock diameter spring is used, in the case of a double spring, the positive stop PTFE Seal is used.
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