Hello:

I am installng a new one piece bathroom sink (marble/fakemarble type).
I purchased a pop-up drain assembly by plumbcraft to install in the
sink. I have a couple questions to be sure I get this right:

The flange came with a rubber washer. Most DIY instructions I have
seen says to either use silicon sealant under the flange (for marble
type sinks) or a strip of plumbers putty. My question is can I use
this washer instead? If so, should I coat it with silicon on both
sides or is the rubber enough? If not----why? It seems the rubber
would create a much better seal. But---that is why I am asking---I
have no idea.

On the underside of the sink, do I (should I) coat the rubber washer
that forms the seal under the sink bowl with silicon first, or will
the rubber itself form an acceptable seal. How tight does this drain
assembly need to be? I do not want to crack the bowl---but---I do want
a good seal.


thx for any time and effort in responses.


peace