

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The FLUIDMASTER INC 500P21 is a vinyl toilet flapper designed as a durable, antimicrobial replacement for standard residential toilet flush valves. Each flapper features built-in Microban technology, which works continuously to inhibit the bacteria that commonly cause flapper material to degrade and fail prematurely. The unit ships with a plastic chain for straightforward installation. Sold in a pack of 21 units, this SKU is well-suited for plumbing contractors, property managers, and service professionals who need reliable flapper stock on hand. The vinyl construction resists the chemical and biological breakdown that shortens the service life of standard rubber flappers.
This flapper is intended for residential toilet flush valve applications where the existing flapper has deteriorated or where preventive replacement is part of routine maintenance. It is also a direct replacement for the flapper portion of the Flusher Fixer Kit and serves as a replacement flapper for the model 555C unit. The 21-unit pack format makes it practical for multi-unit residential buildings, hotels, and service fleets that routinely stock toilet repair components.
Serves as a replacement for the flapper portion of the Flusher Fixer Kit and as a replacement flapper for model 555C. Designed as an OEM-style replacement flapper for standard residential toilet flush valve assemblies.
Toilet flappers are typically installed by licensed plumbers or experienced maintenance technicians. Before replacing the flapper, shut off the water supply at the angle stop valve and flush the toilet to drain the tank. Disconnect the existing flapper from the overflow tube ears and unhook the chain from the flush handle arm, then reverse the process to seat the new flapper. Verify a complete seal at the flush valve seat after restoring water supply to confirm no ongoing leak.
Thanks for subscribing!
This email has been registered!