Make of good synthetic silicone that ' s 35% thicker than standard seals The silicone flapper enhances durability with excellent resistance to wear, bubbling, and deformation Designed to fit toilets and compatibility with Americans Standard 7381424 100.007A models These 3 inch toilet flapper seals provide a reliability solution for various toilet tanks systems For easy replacement of old or damaged flapper seals Each toilet flapper replacement set includes enough seals for multiple repairs in most cases Includes 8 pieces of 3 inch silicone flapper seals for toilet tanks This flapper replacement set provides all necessary components for efficient toilet repair and maintenance Features tight sealing silicone flapper that flushing and water leakage These toilet flapper seals ensures proper water levels for optimal flushing while conserving water, Manufacturer: XIBEIDIANZI