1.5 inch 3:1 Waterproof Heat Shrink Tubing Kit, Large Marine Dual Wall Adhesive Shrinkable Wire Wrap Tube, Insulation Sealing Wear-Resistant Cable Protector by YUKSY (4ft, Black)

I was just looking for a quick roll of red & black shrink tubing to finish off some power cables for my solar installations and snagged these without really looking. I was VERY pleasantly surprised when I put them to use and saw the clear substance like hot-glue-gun glue form a very thin ring at the ends of the connection's tubing. I looked at the inside of an unused section and realized that was effectively what it was! These seal really, really well, forming what I would expect to be a water-tight and very reliable finishing-touch to your custom cable making. Very happy I discovered this stuff, I didn't even know before this that such a hybrid shrink tubing existed. I will definitely be buying more of this stuff! I'd give it 6 stars if I could :)

Very nice . This is the best heat shrink i have ever used. Nice and thick and the glue inside them seals good. If you want factory like results. Then get yeah some. i plan to soon as i need more.

shrinks quickly

I am really impressed with the quality of this thing! The addition of glue to seal the entire thing is genius. It shrinks evenly and also it has a good thickness! You won't be afraid to tear it apart like some other brands. Love it!

works as expected