replacement flush washer

Genuine Fluidmaster PRO73UK replacement flush valve seal. Manufactured from high-grade silicone, this washer is designed to provide a 100% watertight seal for the PRO73UK dual flush valve series. Pro Tip: If your toilet has a slow, constant leak into the bowl, you likely don't need a whole new valve. Check the bottom of your current seal for small bubbles or "blisters"—this is a common reaction to chemicals in the water. Replacing just this washer is a 60-second job that saves the cost of a plumber and a full cistern teardown.