Conservco Drip Stop Valve Rubber For Price Pfister Tub & Shower Card Of 4 Replaces rubber faucet washers Drip stop seals on the interior of the faucets seat and uses the faucets own internal water pressure to create the seal It will work on chipped or worn seats Works on all major faucet brands sold in the US Clamshell/4pk Rounding out the line.