[quote=Edchris177]I know the caulking tubes are not the same stuff as the glazing tape.
I'm going to do a few experiments in the next few days, sealing some corks in bottles, then submerging them off the dock for the season, then leaving them under the ice for the winter.
I won't now til next spring how they hold up.
One other factor that the sailing thread factored in was how much the fitting moved. If it never moves,(think your drain plug mounts) most sealants will work.
He was concerned with things like cleats, & stanchions. Stanchions especially have long lever arms, & are subject to quite a bit of movement, any sealant that hardens, or can't take deformation will leak.
I have not used the 3M product, & had not thought of using the glazing tape. It does make sense. When I worked as a bush pilot in the Arctic, all seam in the floats were sealed with a tape before being riveted. They were subject to horendous vibrations & flexing loads. The name of the stuff escapes me just now. It was 2" wide, medium drab green,(same color as the aluminum primer) & had a peculiar smell.[/quote]
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