1/2 Inch Dia 3:1 Waterproof Heat Shrink Tubing, Dual Wall, 4ft, Black | Marine Shrinkable Wrap, Insulation Sealing, Wear-Resistant, for Boat, Auto, Electrical Wiring, DIY

I recently used the 2 Pcs 1 inch (Diameter) 3:1 Waterproof Heat Shrink Tubing Kit for a few marine wiring projects, which exceeded my expectations. The dual-wall adhesive feature ensures a tight, waterproof seal, essential for the durability and safety of electrical connections in marine environments. The 3:1 shrink ratio is impressive. This allows the tubing to conform perfectly to the wires and connectors, providing a secure and professional-looking finish. The large diameter size is versatile and fits various applications, making it a handy addition to my toolkit. One thing I particularly appreciated was the quality of the material. The tubing is robust and resilient yet flexible enough to work with efficiently. It protects against abrasion and environmental stress, which is crucial for outdoor and marine use. Overall, the 2 Pcs 1 inch (Diameter) 3:1 Waterproof Heat Shrink Tubing Kit is a reliable and high-quality product that offers excellent value for money. It’s a must-have for anyone looking to ensure their electrical connections are protected and long-lasting.

Good Shrinkage

I do like this shrink wrap. I use it mostly on #4, #2 & 2/0 wire in my solar system and batteries. I tested it on a piece of #4, which is 1/2" thick and it worked really well. (see video and images). I used a heat gun and it shrinks up real nice, doesn't burn or curl up. This is 3/4" diameter shrink wrap and I was really surprised that it shrank all the way down to 1/4". Highly recommended. JohnnyF

I bought this to rubberize my tool handles. Works great, nice finish!

Works well, waterproof excellent quality

This just added more life to my fiberglass shovel, rather than having to go out and buy a new shovel. I was able to wrap the fiberglass handle and get many more years out of my shovel. Very easy to use and take your time and use a heat gun.

This is a good product. The reason I say "mostly as advertised" is because the (Red and Black) tubing I purchased was advertised at 1/2" in diameter, but the Red tubing was a bit larger. The diameter of the Black tubing was dead on as advertised but the Red tubing was 0.11" (2.7mm) larger than 1/2" (I measured the tubing with an outside micrometer). However, since this tubing has a (higher than usual) 3:1 shrink ratio the slightly larger diameter of the Red tubing did NOT cause any problem for the project on which I used it (the only reason I mentioned this is because the slightly larger Red tubing "might" affect others who may need a precise 1/2" size). Even with this minor hiccup, I still gave this shrink tubing 5 Stars. It did shrink 3:1 which allowed me to replace two other sizes (1/2" and 3/8" with 2:1 shrink ratios) with this single size. Additionally, the marine glue/adhesive worked exactly like the picture showed. I did, however, notice that a number of other reviews mentioned that the tubing they received was not the diameter advertised. So the seller needs to address/correct this. I would definitely purchase this shrinkable tubing again.

I purchased this heat shrinking tubing because I wanted to repair the fiberglass handle on a shovel that was worn and shedding fiberglass into the skin in the palms of my hand. This tubing worked fantastically, not only fixed the problem but added years to the usage of my shovel.

Good heat shrink, works great. Really sticks!

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!

This did what was stated. It took a little bit more heat to get it to start shrinking. Be careful of what you are trying to cover with this shrink. Other than that it did the job for me just fine.

Great on patch cables that will last a lifetime.

très bien