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.
Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. The 521 seal has a .545" OD and fits applications with 3/8" valves and .500" OD guides. Catalog User 1