Wait! If you're going to search Google for a better price - give us a shot first. Call us at 410.620.3020 and lets see if we can get you a better deal on this product.
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. User 1 Catalog Warranty Catalog