Soil pipe not sealing

[Mikej]

Chaps...I have installed a new 110 soil stack which has 2 elbows on the bottom end each has a 50mm push fit socket.
One of the sockets will not seal even though it only has the boiler conden pipe dribbling into it.
Is there any sealer that I can put into the socket to help create a reliable seal?

 

[ShaunCorbs]

No sounds like the rubber seal is damaged

 

[BILLENK]

You need to take it out, put the rubber back in place(can be tricky sometimes depending on the brand) file the end to a nice chamfered edge and use some lubricant so it goes in smoothly

 

[Chester]

solvent weld it,edit. not the rubber of course.