COMP Cams Valve Seal 11/32in PTFE W/.500 - 510-1

1 PTFE Valve Seal for .500" Guide Size, 11/32" Valve Stem

Application: Engines w/ 0.500" OD Valve Guides and 11/32" Valve Stems

COMP's Positive Stop PTFE valve seals offer more clearance for dual springs with better sealing than o-ring or umbrella seals. This 510 seal has a .600" outer diameter and fits applications with 11/32" valves and .500" OD valve guides.

<ul><li>Fits: 11/32" Valve Stems - .500" Guides (.600" Seal Diameter)</li><li>Valves Seals keep unwanted oil from entering the combustion chamber through clearance in the valve guides</li><li>Smaller diameter than COMP Umbrella Seals to allow use with double springs</li></ul>

COMP Cams offers a complete line of valve stem oil 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, and in the case of a double spring, the positive stop PTFE seal is used. Smaller diameter Viton seals are also available for triple spring applications. Both the o-ring and the umbrella seals require no machining, but when using the PTFE seal it is necessary to disassemble the heads and machine the top of the guide with a special cutter.