WC to soil stack connection woes.....

[Hallsy]

Having some bother connecting my WC into the existing soil stack.

Original WC was sited right next to soil stack so just had a 90 degree pan connector with ribbed rubber on the end straight into 110mm soil stack collar.

After removing old WC and re-arranging bathroom my WC is now 70cm away from the soil stack. I was going to use a length of 110mm soil pipe then 90 degree pan connector onto WC.

Trouble is, previous owners have removed the seal from the soil stack connection. I removed one from a collar I had and it fitted the soil stack, but no matter how hard I try I cannot push the soil pipe into the stack with the seal in. Filed a 45 degree lead, lubricated, no go The pipe fits fine into other collars I have so I guess it's just a mismatch between seals/fittings.

I doubt very much that I'd get a new seal for my Hunter soil stack connection as all of the modern Hunter stuff is of slightly differnt design (same as collars I have here).

Only other way I could do it is to use 2 or 3 of those extension pieces :

http://www.screwfix.com/app/sfd/cat/pro.jsp?id=12078

but I was concerned about having too many joints. Would this be considered bad practice?

Any other suggestions/methods?

 

[dal5band]

Just some thoughts,

Does the 110mm pipe fit into the collar without the rubber seal ? If so you probably need a thinner seal - are using the same make seal ?
I would have thought a loo connector would have been too loose to fit inside a collar - I think they usually fit inside the 110 pipe so - are sure there isn't a piece of 110 pipe inside the collar ?

Finally you could get a "single collar pipe coupler" and stick it into the stack with PVC cement, giving you a nice new collar to work to. (this is better than just sticking the pipe straight in as it still gives some flexibiltiy while you fit the toilet.)


http://www.screwfix.com/app/sfd/cat/pro.jsp?cId=101624&ts=83642&id=13738

 

[Hallsy]

Yeah, it does fit into the stack with no seal. Oh and yes, there was a piece of pipe wedged into the collar which I have removed.

I'm guessing that the ID of the stack connection is slightly larger than that of the collar the seal came from and so causing a tighter fit.

They are different makes, but as I say I believe that the soil stack is too old to get equivalent. I had the same problem with a 32mm waste rubber, all of the modern rubbers were too small to fit tightly into the boss.

Good call on the coupler, is the plain end just 110mm?

 

[dal5band]

Looks like pipe at the plain end - You best check at the merchants.
You definately can get 3M pipe with a collar at one end.