Doughnut Washer For Cistern - Primaflow - 1621

A doughnut washer, also known as a cistern seal or outlet valve washer, is a rubber component that creates a watertight seal between the cistern and the flush valve, preventing water from leaking into the toilet bowl.

Cistern doughnut washers typically need replacement every 5-10 years, depending on water quality and usage. It's advisable to replace it if you notice any leaks or signs of wear, such as hardening or cracking.

Common signs include a constantly running toilet (water flowing into the bowl when not flushed), a cistern that refills frequently without being flushed, or visible signs of wear on the existing washer.

Yes, the Primaflow doughnut washer is designed for easy DIY installation. Basic tools and the ability to turn off your water supply are generally all that's needed.

It is made from durable rubber, designed to provide a long-lasting and reliable seal.

While designed for a range of cisterns, it's important to check the specifications and dimensions against your specific cistern model to ensure a proper fit.

Ensure the washer is correctly seated and creating an even seal. Check for any debris on the mating surfaces. Verify that the correct size washer has been used for your cistern model.

This might indicate the washer is not creating a sufficient seal. Double-check the installation and ensure the water supply is fully turned off before attempting to reseat or replace the washer.

Gently use a non-metallic tool to pry the old washer loose. If it's become brittle, it may break apart, requiring careful removal of all pieces.