Wonky waste thread

[0Floz0]

Hey all

I’ve just fitted a new basin and the thread on the waste is leaking. It’s coming out underneath the nut that the trap is screwing on to. It’s a mcalpine trap so I don’t think it’s that. However, when I screw the trap on. It doesn’t go tight it just keeps turning. I tried some ptfe but that hasn’t helped. It was a cheap waste so I’m assuming that may be the problem.

Any tips on how to solve? I don’t think it’s leaking between the waste and the sink. Just the waste and the trap.

Any advice would be appreciated.

Cheers

 

[Wayners]

Been overtighten or cross threaded. This has caused damage to thread. Just buy another. It's plastic so doing overtighten

 

[robinbanks]

Take it apart and show us pictures. Missing or perished gasket perhaps, might end up with a nice fillet of silicone..