Fitting a replacement basin

[Rekusu]

What ho one and all,

Fitting a replacement wash basin; annoyingly, it is a few mm smaller that the one I have removed so will require some silicone 'remodelling' to fill the gaps. But that is a different issue.
Am using the original pop-up waste fitting as the visible part inside the basin is in good condition.
However, the squidgy washer/sealer is not the same profile as the basin is 'slightly' different from the original.
First question; what is this (red arrow) washer / sealer / gasket/ actually called and can one usually buy a replacement?
Second question, in searching Dr Google for an answer to the above, I found one site that suggests using silicone on the green arrowed areas. None of my basins have silicone in these areas; is this something that I should do?

Thanks

• 

 

[CBW]

Just a basin waste sealing washer, personally wouldn’t use silicone, and would opt for plumbers mait before using silicone. Perhaps this might get you out of trouble?

 

[Rekusu]

Thanks for the rapid response. Can a basin waste sealing washer be bought separately? What a about Plumbers Mate around the edge of the top flange?

Thanks for the link; that seems to be the way to go. Had to fit a whole new waste on another basin where the flanged top was tarnishing; what a palaver fitting the lower washer to stop leaks. That waste seal kit would have made life soooo much easier, but as it is now not leaking, I will leave alone.

 

[Nige F]

google Basin Mate

 

[CBW]

google Basin Mate

I was going to suggest this, but wasn’t sure it was suitable for that type of waste?

 

[CBW]

Thanks for the rapid response. Can a basin waste sealing washer be bought separately? What a about Plumbers Mate around the edge of the top flange?

Yes sealing washers can be bought separately. Plumbers mait can be used if you wish.