Leaking sink tap hole stopper

[alichambersUK]

Hi - I bought a new tap hole stopper from B&Q, installed it and tightened it real tight under the sink.

However, water is dripping thru it to underneath the sink.

The metal area was clean when I put it in - the rubber looked fine and I screwed it on tight.

Any suggestions?



Thanks
Alex

 

[Best]

Did you make sure the stopper is centre over the hole in the sink?
If you just tightened it up it might be to one side of the hole. A bit of insulating tape on 4 sides an even margin away from hole would help to show it correctly centred.
I seal those stoppers with some clear silicone or Tec7 also.
In fact, the rubber washer just needs below the sink if you use silicone above.

 

[alichambersUK]

Thanks

To seal with clear silicone, do you only need a small smear under the stopper itself - and the black rubber washer put under the sink next to the plastic screw?

I have some old LS-X from a toilet repair - would this work the same as clear silicone?

 

[PlumbBobBob]

yes lsx will be fine