COMP Cams · New

COMP Cams Valve Seals 5/16in PTFE

Name: COMP Cams Valve Seals 5/16in PTFE
Brand: COMP Cams
SKU: cca500-12
Price: 37.95 USD

MPN 500-12 · Store SKU cca500-12

$37.95

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Supplier stock checked 11/8/2026, 7:41:17 AM UTC. Adding a part does not reserve it.

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Product details

COMP 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. We also have a smaller diameter Viton Seal available for triple spring Applications. COMP's Positive Stop PTFE valve seals offer more clearance for dual springs with better sealing than o-ring or umbrella seals. These 500 seals have a .630" outer diameter and fit applications with 5/16" valves and .530" OD valve guides. Set of 12 PTFE Valve Seals for .530" Guide Size, 5/16" Valve Stem

Manufacturer fitment & guides

Engines with 0.530" OD Valve Guides and 5/16" Valve Stems

Manufacturer-supplied application summary from Turn14; this may not be an exhaustive fitment list.

Part-specific notes

California Proposition 65: Y

Manufacturer documents

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