KEENEY 3.5-in. Toilet Tank Flush Valve Shank Washer

Keeney's flush valve shank washer is designed as the first gasket to sit underneath the base of a toilet tank before the nut is tightened, preventing water from leaking down the drain. It features high quality rubber construction with an inner diameter of 3.5-in. that securely seals to the tank for peace of mind. The flat style design fits American Standard, Kohler and Eljer toilets. You can install with confidence knowing Keeney stands by its products with a Limited Warranty.