14316 3M Marine Adhesive Sealant 4000 UV, Black, 295 ml Cartridge MMM-14316

We have used this stuff to seal in a wet, industrial environment for the last 2 years, Once it is set in place it does not leak or break loose like the silicone based sealers we have used in the past. It is difficult to get apart once set but that is great in my opinion its doing its job well.

I am on my third tube of 4000 uv fast cure. All bought at different places and times. I have not had any of the problems others reviewing have had. I use it completely submerged doing a pretty demanding adhesive job, holding up the spray ring in my driveway fountain. No problems at all.