• Stop a running toilet with the durable Fluidmaster® 504 chlorine-resistant toilet flapper Easy-to-install Flexible design - fits on flush valves with or without mounting ears Chorine and hard water-resistant Kink-free metal chain Built-in Microban® technology

Best for older toilets, 3.5 gpf or more (before 1994). The Fluidmaster® 504 long-lasting toilet flapper is designed to withstand harsh water conditions. Featuring chlorine-resistant material and built-in Microban® to extend lifespan. Only Fluidmaster® has toilet flappers with built-in Microban® protection. Not just simply a coating, Microban® is specially built-into the construction of our flappers to fight flapper breakdown and combat bacteria. This versatile flexible frame design fits flush valves with or without mounting ears and works with most 2 in brass and plastic flush valves. Quickly eliminate water waste due to a faulty flapper with Fluidmaster® 504 universal chlorine-resistant long-lasting toilet flapper.