Here in the salt belt one has to take extra measures to keep corrosion out of electrical joints. I use adhesive lined heat shrink to keep moisture and resulting corrosion out and it works well. But heat shrink has to be applied before soldering or crimping two wires together. What can you apply after the joint has already been made?
Liquid Tape - I am going to buy a bottle and try it out. https://www.delcity.net/store/Liquid-Tape/p_790066.h_790067
Hot Melt Fusion Tape. Never tried it. https://www.delcity.net/store/Adhesive-Fusion-Tape/p_818697.h_818698
Cold Shrink Tape aka Amalgamating Tape. I use it but it does not waterproof well. My primary use for it is over the usual vinyl insulating tape to keep the end from unravelling. https://www.delcity.net/store/Cold-Shrink-Tape/p_77309.h_78132
Last week I was working under a truck and saw a joint where the box upfitter, for powering box clearance lights, had soldered on to a wire in a OEM harness and had taped it up with what looked like black vinyl insulation tape. After mentally cursing him and anticipating lots of corrosion under the tape, I took the tape off and was truly astonished to find a pristine soldered joint underneath, as clean as it was on the day the joint was made. There was a very light grey paste which had protected this joint for fifteen years in very harsh conditions. This paste was quite thin in consistency, like mayonaisse. The tape might have had this paste lining or the paste might have been applied first and the tape wrapped over the paste. I should have taken a pic but I didn't. What was this paste?
Liquid Tape - I am going to buy a bottle and try it out. https://www.delcity.net/store/Liquid-Tape/p_790066.h_790067
Hot Melt Fusion Tape. Never tried it. https://www.delcity.net/store/Adhesive-Fusion-Tape/p_818697.h_818698
Cold Shrink Tape aka Amalgamating Tape. I use it but it does not waterproof well. My primary use for it is over the usual vinyl insulating tape to keep the end from unravelling. https://www.delcity.net/store/Cold-Shrink-Tape/p_77309.h_78132
Last week I was working under a truck and saw a joint where the box upfitter, for powering box clearance lights, had soldered on to a wire in a OEM harness and had taped it up with what looked like black vinyl insulation tape. After mentally cursing him and anticipating lots of corrosion under the tape, I took the tape off and was truly astonished to find a pristine soldered joint underneath, as clean as it was on the day the joint was made. There was a very light grey paste which had protected this joint for fifteen years in very harsh conditions. This paste was quite thin in consistency, like mayonaisse. The tape might have had this paste lining or the paste might have been applied first and the tape wrapped over the paste. I should have taken a pic but I didn't. What was this paste?