COMP Cams offers a complete line of valve stem seals, from the umbrella seals to the positive-stop Teflon seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. 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 Teflon seal is used. The umbrella seals require no machining, but with the Teflon seal it is necessary to disassemble the heads and machine the top of the guide with a special .530 diameter cutter. Whenever you are planning an engine overhaul or a cam change, don't forget the valve seals.
COMP's Positive Stop PTFE valve seals offer more clearance for dual springs with better sealing than o-ring or umbrella seals. These 505 seals have a .630" outer diameter and fit applications with 3/8" 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
Available individually under 505-1, available in a set of 12 under 505-12
Set of 16 PTFE Valve Seals for .530" Guide Size, 3/8" Valve Stem
Engines w/ 0.530" OD Valve Guides and 3/8" Valve Stems
16 PTFE Seals .530" Guide, 3/8" Stem
COMP Cams Valve Seals 3/8in PTFE
Engine Valve Stem Oil Seal Set
Valve Stem Oil Seal
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