COMP Cams 503-8 – Valve Seals 11/32in PTFE

Description

COMP Cams 503-8 – Valve Seals 11/32in PTFE

Set of 8 PTFE Valve Seals for .530″ Guide Size, 11/32″ 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 503 seals have a .630″ outer diameter and fit applications with 11/32″ 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.

Amazon ASIN: B001R9FJAOC.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?: YesC.A.R.B. Exemption Reason: No impact on pollution output of vehicle.C.A.R.B. E.O. Number: N/ASeal Outer Diameter: 0.63Valve Guide Outer Diameter: 0.53Valve Seal Type: Positive Stop PTFEValve Stem Outer Diameter: 11/32