On Oct 9, 1:15 pm, Speedy Jim wrote:
GoHabsGo wrote:
Hi all,

I just installed a new counter with builtin sink made of mezanite and after
I installed the faucett and sink drain, there is a slow drip when using the
sink.

The sink is odd in that it has no vent for the drain, it is a simple bowl
with a hole in it. The drain pipe is made of some plastic material with a
rubber gasket that goes under the sink and tightened by a large nut on the
pipe. The pipe does have holes near the top which I assume are there to
accomodate a vent/overflow, which my sink does not have.

Instructions that came with the pipe said to use teflon tape on the top of
the pipe which threads onto the shiny flange peice on the inside of the
bowl. I have done this twice. Second time, I used the thicker teflon tape
and it still drips. I am afraid of overtightening the nut to stop the
drip. Is it possible that the drip is coming from the lower part of the
pipe, where the big rubber gasket is? Should I teflon tape there too?

I was also thinking of doubling up with pipe dope and tape.

Any suggestions, other than 'call a plumber', will be appreciated. This is
not rocket science, I just need a pointer or two.

Thanks,

Larry

The rubber gasket will rarely provide an
adequate seal. Use a smear of silicone sealant
on both sides of the gasket (dry surfaces first).
Use the same sealant on the fine threads of the
tailpiece.

Don't worry about the lack of an overflow;
that alone won't create any leakage.

Jim- Hide quoted text -

- Show quoted text -

Yup, I've seen numerous drain installation instructions give bad info,
as if they copied it from other bad sources. Often sinks have a
rubber seal that can't quite squish into the roots of the threads. So
the water follows a helical path down the threads and leaks out. It's
a dumb design. Silicone it.