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 Installing bathroom sink drain
Author: Tom the Elder (CA)

Purchased Keeney K820-75 push button bathroom sink drain. Instruction say: 1) remove the locknut, friction washer and drain washer; 2) apply drain sealant to underside of drain flange then insert it into drain opening; 3) from underside install the drain washer, friction washer and locknut. The instruction do not mention the black washer (shown in product photo) that clearly fits between the drain flange and the sink. Questions:

1) Is sealant necessary when that washer is used? [youtube video showed generic installation without sealant]
2) If sealant is necessary or recommended, does it go above the washer, below it, or both?
3) Is there a suitable sealant other than plumbers putty?



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 Re: Installing bathroom sink drain
Author: packy (MA)

throw the thin rubber washer away.
use 100% silicone caulk under the drain flange and smear a little on the top side of the lower washer.
tighten firmly, wipe away excess caulk right away and clean with denatured alcohol.
no need to let the caulking dry. use the sink right away.

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 Re: Installing bathroom sink drain clap thumbs
Author: Tom the Elder (CA)

Once again, dependable advice from Packy. Thanks.

Edited 1 times.

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