leaky toilet connection

[goofy gorilla]

hi guys - ive got a loo, thats leaking water...when flushed..leak is from rubber seal in cast iron pipe..looks like the rubber seal has gone...anyone tell me what size this internal rubber seal is...the pan connector from the toilet is pushed into the rubber seal, which is in a old cast iron pipe going outside...see pic....seems like this is an old cast iron soil pipe looks around 8"..

 

[looneyfitter]

Id cut the cast collar off then push another pan connector into the cast tbh.. Wont leak ever again

 

[goofy gorilla]

Id cut the cast collar off then push another pan connector into the cast tbh.. Wont leak ever again

lol..too much hard work to cut through that cast iron...was hoping to get the seal....what size seal do i ask for ?

 

[therealAdamB]

You could try the above solution, or you could do the job properly.

Replace the old cast pipe and stack system. Chances are you haven't got rodding access in base of stack anyway.

Also compression fitting really shouldn't be that close to soil pipe. Ideally should be joined to soil on outside of property.

 

[Hugh Jaleak]

The cast will be around 4" internal dia, it bells out for the collar. You are somewhat limited in choice due the the pan connector having the boss for the waste connection, try the equivalent (new) pan connector, go to a plumbers merchants and tell them what you need, they'll have more choice than the sheds. Alternatively, a few turns of 'Denso' tape could seal it although wont look pretty.

Bear in mind, depending on the height of the branch throught the wall, you may well find its too high should you need to fit a new pan, in which case you'd probably need to renew the stack anyway. Depending where stack runs to underground, you may not need rodding access at the base. The compression fitting is part of the pan connector, so there isnt much choice where its located!

 

[Nige F]

[tbh.. Wont leak ever again

lol..too much hard work to cut through that cast iron...was hoping to get the seal....what size seal do i ask for ?[/quote] pull it all out and take it into PTS . they`ll size it for you.

 

[looneyfitter]

Also compression fitting really shouldn't be that close to soil pipe. Ideally should be joined to soil on outside of property.

What makes you say that? The compression fitting is a part of the pan con...

To the op. if you take the toilet out and the existing pan con/rubber ring, you may be lucky and get a straight pan connector to sit within the collar.

Then refit a as was. Have seen them rings before but was a long time ago.

You can get a cheap angle grinder for 15notes now. It will be through the cast in 5mins tops and you would have a proper job

 

[goofy gorilla]

thanks guys....but way too much work...the comp fittings are from the waste pipe of the sink basin....had no other choice but to run the sink waste pipe into the cast iron pipe...anyway...has never leaked in 20 odd years thats its been here...might find a rubber sealnt or might even seal it with some sanitory sealant...dont see the point of cutting it all up..way too much of a big job and expense...also the cast iron pipe is on the first fllor..goes throught the side of the wall ..down the side of the house and into the ground...solid reliable pipes aunlike the cheap nasty opnes you find nowadays...they wer built to last...lol

 

[Whitespirit66]

I've seen this before when people have gunned a few pounds of sealant in, and it still leaks.

Doing it properly as Looneyfitter says isn't difficult. Remove the toilet pan, hire a chain cutter from hire shop, and cut pipe behind the collar. Slide in new pan connector and refit toilet.

No more leaks.

 

[goofy gorilla]

hi guys just an update..it turned out that it wsnt leaking from the cast iron soil pipe....it was the flushcone seal in the WC pan where the pipe goes into the wc...water was dripping down onto the caste iron soil pipe making me think it was leaking.....doh !.99p job from screwfix....no leaks now...thanks for the advice guys...