Donut washers

[mfgs]

What donut washers do you guys find best. Also are there bigger ones available for the old 2 1/4 inch cistern holes?

 

[ShaunCorbs]

depends old pans the rubber ones

but flat bit down to pan as more surface area and better squeeze unless there's a special indent for radius bit

newish ones

and get a donut for a 2" will stretch 1/4"

 

[mfgs]

I seem to struggle to get a good seal with the standard donuts on the bigger 2 1/4 inch outlets. Although I have only ever done two, both have been a nightmare to get to seal with a standard donut.

 

[Phil]

I hate myself but i smear clearfix on doughnuts now and never had one leak since. Had to many of the dreaded wet finger on a late evening jobs.

 

[Best]

I find if the cistern seems to stay up off the pan because the donut washer is clearly hitting solid, then those seals will not leak.
It is the loos where the cistern and pan china hit together that are more likely to leak.

 

[bert large]

If find the bigger softer donut washers seem to work in most cases, more so than the harder smaller ones that often come in the close-couple kit.

 

[JCplumb]

I've been coming across more of the 4 1/2'' ones lately, I think they're only found on ideal standard loos. I looked one up a while back and if I remember correctly they're £6 each.
Luckily I have managed to re-seal the old ones I have come across so far. Although they're a rip off they do seem to be well made and keep their spring.

 

[WaterTight]

The 1.5" and 2" foam ones will seal on 99.9999% of WC's (i only don't say 100% as i believe - because i've seen pics -there are triangular ones out there? what on god's earth is the point of that..)

I bet if you put the doughnut in place and put the cistern on straight and level and get your mate to hold it in position, no c/c bolts, no screws to wall and flush it, it will never leak. Your job then is to keep it in that position, be that with spacers between tiles and cistern, be that leaving c/c bolts barely tight if a bad installation will force the cistern off level or off striahgt when tightened and so getting it solid by others means. That's the trick.