Sink leaking due to badly-cast bottom-boss

[mointainwalker]

Hello

Unsure if above is clear, but my problem is that , after buying and installing a new hand-basin in the WC, I found that the bottom boss was badly cast at an angle and it was impossible to get any kind of a seal when screwing the female half of the plug assembly onto the basin.

As already on wall, didn't want to take off and return ( long way to store as well ) and so used angle grinder to flatten/level boss. It is now close to level but still leaking: I don't want to continue with the grinder in case I go too far and there is not enough thread on the assembly to allow me to fit two washers.

If I apply silcone to the boss and screw up onto that, would you expect that would give me a seal that would hold permanently?

Thanks in advance

 

[Burnerman]

Have a look at Basin Mate - Toolstation 37534.
John

 

[scoobydo123]

Thumbs up for basin mate here as well. Always fit them regardless first time seal everytime and no gunge of any type required.

 

[Nige F]

If I apply silcone to the boss and screw up onto that, would you expect that would give me a seal that would hold permanently?

Yes But if you`ve got hemp+ boss white handy , make a fat sticky grommet - gunge is good