What sealer for sink?

I will be installing a drop-in stainless steel sink into a plywood cabinet in the next couple of weeks. The sink has a lip and when installed by a previous owner, a black sealent was used. Can anyone tell me what might be a good sealent to use on this type of sink used in a wet B&W darkroom? My assum,ption is that is will be a more or less permanent installation. Bill Barber

A silicone sealer, of your chosen colour. This is chemically inert.

Ian

Be sure to clean and prepare the surfaces (you might want to scrape all the old stuff off of the sink). If any water gets under the sink lip and into the wood, it would probably de-laminate the plywood. When I made my sink, I used 3/4 inch birch plywood, and put 5 or 6 coats of marine finish on it (the first coat was diluted 1:1 with thinner to penetrate well), and treated the end grain very well around where the lip of the sink will be. The sink went in last, with the silicone caulk all around. I've had it almost 20 years, never a problem.

Nsurit. I am old. Been in a darkroom of the homemade kind, and professional, since about 1951. As an adult, have had 3 sailboats. Small ones. Wood, fibreglass... The worlds' best thru-hull sealant for metal to wood, metal to fibreglass is 3M 5200. Available now at even Home Depot.

sink or swim

West system epoxy to seal the plywood and 3M 5200 to seal the sink joint. Add a big stick and a couple of potato chip bags and go sailboat racing too.
Cheers, Neil