Wirefy1/4" Heat Shrink Tubing - 4:1 Ratio - Adhesive Lined - Marine Grade Heat Shrink - 50 Feet Roll - Black

This heat-shrink tubing has a good heat-activated adhesive inside of it. There is a good amount of shrink that doesn't require a crazy amount of heat. This tubing is easy to use and stays in place. Not thin walled.

Shrinks up really well- I used it to hold two battery cables together for the RV. The glue does a great job of expanding to create a watertight seal between two cables.

I built a DIY 12 channel TRS snake for my studio and the Wirefy heat shrink was a vital part of the success of the project. This product is exactly as advertised and works as good or better than anything I have used prior. This shrink wrap has a very solid water tight look to it and appears as if it will stand the test of time. The 4:1 ratio of shrinkage is an awesome feature as this saved me from buying different sizes of the product. One size met my needs beautifully. I really like how the heat creates a nice little clear plastic seal on each end of the wire. This should provide an extra degree of insulation and stability to my connections on both ends of the snake. I build allot of electronic projects and I make many homemade audio cables for my guitar rig and studio. This will now be my goto choice for shrink wrap in the future.

I’ve been building Jeeps and rods for many years. Every job entails requiring either partial or complete. I have been using ES-1 heat shrink. This is what the OEM’s provide in their harness and pigtail repair kits. It works great, but it can be really hard to find, and expensive once you do. I ran out recently and could not wait for my source to ship. So I decided I would try some of this product. Well, I’m pleasantly surprised. This Wirefy product is a perfect replacement. It has similar shrink ratio, strength, flexibility, and adhesive qualities to the OEM product. There is possibly a minuscule amount less adhesive in the Wirefy product but there is plenty to create a waterproof seal on a pair of wires sealed in parallel. I’m sold and will be using the Wirefy product on all my projects from now on.

When in doubt, go up a size. My 1/2" would not fit over something that was 0.47".Other than that, it's great.

Great stuff! The 4 to 1 makes this really versatile.

Good product & will order again in the future

I have tried a few dozen different brands over the years, but nothing as compared to the quality of this 4-1 heat shrink. 100% the best we have ever used. We make custom harness’s for use in the custom truck accessories market and use a couple rolls a month. Once you heat shrink something with this product it’s there for life. The adhesive inside it must be a structural product because it’s amazingly strong and water proof.