Before, whenever I spliced any wires that required shrink tubing, I always soldered and used shrink tubing that had a salve like substance inside the tube, and there was never a problem with moisture or corrosion. I can hardly find this type shrink tubing anymore, and what I did find was cost prohibitive for the little I use. I'm wondering if after soldering, apply some common silicone sealer and slide the tubing over it and shrink it. Should keep it sealed, however, is there something in the silicone that would corrode the solder connection?
Many thanks for any help. Lee.