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ALEKOR heat shrink tubing is the best option for wire insulation. Aside from its excellent insulating properties, it comes with a variety of other useful features, like its ability to bundle cables, add strain relief, or be effective for waterproofing irregular-shaped objects. This adhesive-lined 3:1 ratio heat shrink tubing creates a tighter fit around the target components and, once melted, its adhesive forms an impenetrable seal.
Heat shrink tubing has many useful applications, including providing electrical insulation to wires, connections, joints, terminals, and splices, as well as bundling loose items such as wires and as a protective covering.When used as a protective covering, heat shrink protects from abrasion, cutting, scuffing, and low impact situations.
- High Shrink Ratio Shrink Tube
For waterproofing connectors and wires, this ALEKOR 3:1 industrial heat-shrink tubing is one of the best solutions, it is more resistant to stretching and vibration than regular heat shrink and has more tensile strength, this allows for an extra tight fit that is hard to achieve with tubing that only shrinks to half its size (2:1).
A higher shrink ratio can be useful in applications where you need a tighter fit, or when you need to slide the heat shrink over a connector that is significantly larger than the wire that it is connected to.
- Waterproof Dual Wall Heat Shrink Tubing
Adhesive lined heat shrink, also known as marine grade heat shrink, is made up of two layers. When adhesive-lined tubing heats up, the adhesive melts at the same time as the outer layer shrinks, adhesive flows into the small leftover cavities between the heat shrink and the object that is being sealed, after the tubing and adhesive have cooled down, is a watertight seal. Ideal for boat cars or hobby RC projects where splashing water is a frequent occurrence.
jeff snider
Reviewed in the United States on February 11, 2025
Thick, very useful for my marine applications, but good for everything
chad plante
Reviewed in the United States on January 3, 2025
I really like this roll of adhesive lined shrink tube because it really shrinks down I think even more than its advertised 3 to 1 ratio
Brian
Reviewed in the United States on January 15, 2025
I use the shrink wrap to repair a cheap plastic air hose on a vehicle vehicle. The shrink wrap easily fit over a three-quarter inch flexible tube and shrunk to a nice heavy duty product.. I may have to warm it up when I install to get the bins to reform
Ben Elliott
Reviewed in the United States on August 15, 2024
Shiver me timbers! If ye be in need of some reliable heat shrink tubing, look no further than this ALEKOR gem! With a mighty 3:1 shrink ratio, it shrinks down tighter than a ship's riggin' in a storm, makin' it perfect fer all yer electrical needs.I got me hands on this roll, and let me tell ye, the adhesive lining be stickier than a pirate's fingers after a treasure hunt! It seals up connections like a trusty cannonball in a barrel, keepin' moisture and mischief at bay.Pros:Strong and Reliable: Holds up against the fiercest of seas and keeps yer wires safe!Easy to Use: Just heat it up, and watch it shrink down to a snug fit!Versatile Sizes: Comes in a range of sizes that fit all yer needs, from small repairs to big projects.Cons:Thin Wall: While it be durable, some might find it a tad thinner than expected, but it still gets the job done!
Customer
Reviewed in the United States on July 8, 2024
Good product
DRC
Reviewed in the United States on February 27, 2024
A number of reviewers are complaining they got the wrong size but they are confusing their measurement of flattened product with the word "diameter", which is how the product is sold.The sizes are given in diameter as noted on the product box and the various photos. So, if for example you have a 1" diameter tube (size = 1") and then flatten that tube out for shipping, of course the flattened product will measure more than 1". Unflatten it so that it is again a tube/circle, and it's diameter is 1".I found the product heavy duty with accurate shrink and generous amounts of glue. It does take a bit of time to shrink it down. I was using a 1700 watt heat gun for shrinking the 1" and 1.25" product. I would not want to try it with anything less than that.
Walkfar
Reviewed in the United States on October 28, 2024
Works exactly as advertised - adheres tightly following application of a heat gun to produce a heavy duty, watertight wrap.
Buildershim
Reviewed in the United States on October 11, 2024
I got tired of having usb charger cables failing due to heavy usage. Bought the 1/2" (12.7mm) heat shrink tube which fits over all my usb connectors. I heat shrink a 1 5 inch tube over each of the two connectors. While the adhesive inside is still hot, I seal the tube by gently pressing it with a pair of pliers. This creates a firm protective seal over the cable's week points. Works like a charm!
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