I work for a large manufacturer and some of our customers orders ask to have the electricals 'sealed'. We use what is pretty much a heat shrink tube that is placed over wired connections/plugs. If the product works correctly i'd say they were water resistant, but not something you would want to submerge for ANY length of time. It's like a silicone sleeve placed over the connection, then it's hit with a heat gun to 'shrink' wrap it, thus causing the internal adhesive to 'melt' around the wired connection, sealing it.
Sponsored