Volume 141 Catalog Page: 634Fluidmaster Replacement Kohler Aquapiston, American Standard Champion 3Designed to be a direct OEM replacement for a secure seal and perfect fitDurable silicone seals - last 10x longer than standard materialPrevent or stop leaks from specialty flush valvesChlorine and hard water resistant3-pack of replacement seals5-years warrantyPROS3KP15