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COMP Cams Positive-Stop PTFE valve seal fits 5/16" valve stems and .500" valve guides, with a .600" outer diameter (513 seal). These seals offer improved sealing over O-ring or umbrella types while providing extra clearance for dual-spring arrangements. Smaller than COMP umbrella seals, the PTFE design allows use with double springs without compromising oil control at the valve guide.
COMP Cams Valve Seal 5/16in PTFE W/500 G
