cistern syphon washer replacement

19 Aug 2008
Reaction score
United Kingdom
I have a push button cistern, fitted within the past 3 years, it began to run constantly into the pan. After trying a number of things, we think it is leaking water from the cistern into the pan because the large black rubber ring washer at the bottom is perished and not sealing. I can't seem to find a replacement washer - it is 80mm external diameter and 59mm internal diameter with a lip. I've tried taking the syphon to B&Q, Wickes, William Wilson and searching online, but I'm not sure exactly what it's called. There is no manufacturer's name on the cistern or syphon.
Sponsored Links
Are you talking about a doughnut washer? comes with a closely coupled kit. About £3 from screwfix, £6 from a plumbers merchants or £15 from B&Q.


Hang on, I'm talking nonsense. This isn't the bit you need. get a new syphon.

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Sponsored Links