Review on Waterproof Heat Shrink Tubing ELECFUN by Marcus Rash

3-1 heat shrink tubing lends itself to so many uses. Forgot to hang up the phone before connecting? With this shrink factor, the tubing will fit into many fittings and then shrink in place. BAKES and APPLIES. In this way, when you splice two cables, they literally join the jacket together, so the load is taken by the heat shrink tubing and not the splice itself. You can see the shrinkage in the photos - I took two different pieces of tubing and wrapped them around the power cord. You can also see copious amounts of adhesive/sealant being squeezed out as it heats and seals.