How will I know which size of flapper will fit my toilet?

Fluidmaster manufactures both a universal 2” flapper and a universal 3” flapper. To determine the size of flapper you need, measure the drain hole the flapper covers, if the hole is 2.5 inches use a 2 inch flapper and if the drain hole is 3.5 inches use a 3 inch flapper.

How does an adjustable toilet flapper work?

An adjustable flapper can be turned like a dial and has numbers on it that range from minimum to a maximum setting. Turning the flapper to a lower number forces the flapper to close sooner for a shorter flush and setting it to a higher number will allow it to stay open longer for a longer flush.

Flush Valves

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Flappers

Flush Valves

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The 555C - 2" Universal Flush Valve Repair Kit with Flapper is available online, from our following retail partners.

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555C - 2" Universal Flush Valve Repair Kit with Flapper

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Fixes leaks on both 1 and 2-piece toilets with a 2″ flush valve
Restores flushing performance
Best for toilets made after 1985
If you have replaced the flapper and the toilet is still running, the 555C will resolve the issue
The putty will work on plastic, ceramic and metal drain seats and will come off easily after years of use
No tank removal, very simple to install
Fixes damaged flush valve seats without removing your toilet tank
PerforMAX® adjustable flapper included which is removable
The higher the number on the flapper, the longer the flapper will stay open
Chlorine Resistant
5 year warranty

Best for use in 1.28, 1.6 and 3.5 GPF toilets. The 555C is a flapper and drain repair kit. The kit allows you to repair a damaged flush valve “drain seat” so that your new flapper can make a water tight seal. The advantage of this kit is that it allows you to repair a damaged flush valve without removing the tank and stop the water loss through the drain and flapper. The quickest and easiest way to fix leaks from your flush valve, with its no tank removal “peel and stick” process. Simply peel the protective paper off the sealant ring and stick right on top of your existing 2” flush valve seat, it’s that simple. The included PerforMAX® 2” Adjustable Flapper, has an adjustable dial for a customized flush and water-savings. Other features include a solid frame flapper design to ensure a secure seal and eliminate twisting, and built-in Microban® technology to fight bacteria on the flapper itself. Quickly repair leaks, while upgrading your flapper with the PerforMAX® Flush Valve Repair Kit.

** DO NOT USE IN-TANK DROP-IN TOILET BOWL CLEANERS CONTAINING BLEACH OR CHLORINE. USE OF SUCH PRODUCTS WILL RESULT IN DAMAGE TO TANK COMPONENTS AND MAY CAUSE FLOODING AND PROPERTY DAMAGE. USE OF SUCH PRODUCTS WILL VOID THIS WARRANTY. Instead, we recommend using Flush ‘n Sparkle® automatic toilet bowl cleaner.

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