Leaking new toilet doughnut - what have I done wrong?

Thanks for that DA - well I'm glad I'm doing something right!. Re the orientation of the plate-there are actually depressions in the porcelain casting to accomodate raised portion of the plate - meaning that the plate could in theory be fitted both ways round. either way round it still "bottoms out" with the wing nuts fully tightened. I think I do need a bigger doughnut. Will reserve the inverted doughnut idea until I'm desperate. (Using bucket of water as the flush mechanism at the moment - Ooops - must dash - on latrine duty...

 

Arrrrghh - now he tells me!! It IS an Ideal Standard bowl so obviously the "bog standard" (exculse pun) doughnuts will not seal properly. Will now use your link to source the correct one. Thank you so much!

diymostthings

 

No its not from any other source - cistern stays full overnight with no sign of a leak - only when flushed. thanks for the thought though.

 

The old one was so rusty and decomposed I couldn't check this. the old doughnut was similarly covered in rust deposits and in bad shape so hard to tell. I'll measure the hole size later (away from home until this evening).

 

Yes I realise that now - but at the time of the OP I thought these were all a standard size.

 

Well the main section of the plate still fits hard against the base of the cisitern no matter which way round it is. With the raised portions of the plate in the recess it does give a little more squdging power... (But i need to research a bigger size doughnut)

 

All sorted now thanks one and all. It was the wrong size doughnut. I got a larger one from local plumbers merchants and all is well. So much for British Standards.

 

I wish!....

 

"There was a young plumber from Herts,
who could not get the right plumbing parts.
Try as he might,
With the nuts done up tight,
It leaked like a sieve all night".