The Fluidmaster replacement flush valve seal for American Standard Champion 4, Pro, and Eljer Titan 4 Toilets is a quick and easy way to eliminate leaks on specialty flush valve toilets. Designed to be a direct OEM replacement for a perfect fit and secure seal. Built to last, this silicone seal lasts up to 10X longer than standard models and is chlorine and hard water . Eliminate water waste and get a part made to fit secure, with the Fluidmaster 510A-001-P10 American Standard and Eljer specialty flush valve seal replacement.