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.
PTFE; Seal; Valve Guide; Valve Guide Seal; Valve Stem Seal; Valve Seals; 5/16" Valve Seals; 11/32" Valve Seals; .530" Valve Seal; Umbrella; O-Ring Seals; Viton Seals; 8 mm Seals
Set of 12 PTFE Valve Seals for .530" Guide Size, 5/16" Valve Stem
Available individually under 500-1, in a set of 16 under 500-16
Engines with 0.530" OD Valve Guides and 5/16" Valve Stems
12 PTFE Seals .530" Guide, 5/16" Stem
COMP Cams Valve Seals 5/16in PTFE
Engine Valve Stem Oil Seal Set
VALVE SEALS, 5/16" PTFE
Valve Stem Oil Seal
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