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COMP Cams 500-12 - Valve Seals 5/16in PTFE

COMP Cams 500-12 - Valve Seals 5/16in PTFE

COMP Cams | 500-12
SKU: COMP-500-12
$46.99 USD
$51.69 USD $46.99 USD
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DISCLAIMER: This Item Is Special Ordered, which may have cancellation or return restrictions. Please see our terms and conditions for more information.

COMP Cams 500-12 - Valve Seals 5/16in PTFE

Set of 12 PTFE Valve Seals for .530" Guide Size, 5/16" Valve Stem

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.

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.

Seal Outer Diameter: 0.63
Valve Guide Outer Diameter: 0.53
Valve Seal Type: Positive Stop PTFE
Valve Stem Outer Diameter: 5/16
Amazon ASIN: B000P59ARO
C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?: Yes, but must be a race/competition only vehicle.
C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?: Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for On-Road Vehicles?: Yes
C.A.R.B. Exemption Reason: No impact on pollution output of vehicle.
C.A.R.B. E.O. Number: N/A
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