Siphon change in close coupled cistern

5 Jun 2008
Reaction score
United Kingdom

I am going to replace the siphon (standard 8") inside my toilet cistern - but I have one query before I begin thr work!

If I ak careful when removing and installing the new siphon and backnut, will the original doughnut washer be ok and leak free?

I have read posts about new dougnnuts, and some hard to get, but about them being torn, etc when working on a siphon.

Any tips or advice please would be great ...
Sponsored Links
depends on how long been installed and how squashed it maybe.
can't tell till removing.
ok good point. so if it is squashed, will i be able to get a replacement from a plumbing shop?
sometimes but i have had to order many straight from the supplyers.
do you know make of toilet etc ?
Sponsored Links
is that whats stamped on the toilet ? cause i know bemis make toilet seats.
take it out see how bad it is.
if knackered plumbers merchant if not measure it and you can match it with one on the net etc.
ok thanks will begin now....

any gd net sites for a spare doughnut if need be though-any recommended?
i would suggest using the old jam nut if you intend to use the old donut washer as it will be shaped to suit the old nut and may seal earier than using the new nut

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