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 resistant. 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.