COMP Cams Valve Seals 11/32in PTFE

Fits: 11/32" Valve Stems / .530" Guides (.630" Seal Diameter). Valves Seals keep unwanted oil from entering the combustion chamber through clearance in the valve guides. Smaller diameter than COMP Umbrella Seals to allow use with double springs. 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. Available individually under 503-1, in a set of 8 under 503-8, in a set of 12 under 503-12 Engines w/ 0.530" OD Valve Guides and 11/32" Valve Stems