Leaky sink

[Tim22]

I recently renovated the galley in my Hunter 310 and installed an Ambassador sink & 2 inch drain. Since then I have been unable to get the drain to stop leaking. It leaks badly from the gasket between the underneath of the sink and the bottom part of the drain. The bottom part of the drain is a plastic cup with a thick rubber gasket that is supposed to seal against the underside of the sink. Problem is that it doesn't!! Can I use silicon to seal between the gasket and sink?

The drain kit is Ambassador model S00-0104-BP and the sink is Ambassador model S44-1831-UM.

Thanks
Tim

 

[Stu Jackson]

Did you use plumbers putty? IIRC, the instruction manual says to use one or the other but not both.

 

[Tim22]

Hi Stu
I sealed the top of the drain (ie inside the sink) with putty and this works fine.

The problem is underneath the sink where the drain cup seals to the underneath of the sink. The seal is made with a thick, molded rubber gasket that is held in place when the bolt between the top and bottom parts of the drain is tightened down.

Tim

 

[Stu Jackson]

Tim, understood. What I'd do is get some putty underneath, too, between the rubber ring and the sink bottom. My Ambassador manual is on the boat, I'll check it later today and get back to you. I didn't have this issue.

I also confused the seals: the drains come with seals above the sink, which one uses putty instead of, not both the upper seal and putty. Sorry about that.

Here's what I did: http://c34.org/bbs/index.php/topic,7597.msg53592.html#msg53592

 

[Peggie Hall HeadMistress]

Overtightening the bolts in a gasketed connection can actually CAUSE it to leak, 'cuz overtightening causes the gasket to pucker. Not realizing this, most people tighten more...and more, causing the connection to leak more...and more. If the gasket has become permaenently deformed, you'll have to replace it to get a good seal.

(I see this a lot from people who've replaced toilet joker valves and were determined to make sure the discharge fitting connection was "good and tight" btw.)