3:1 Ratio Heat Shrink Tubing Roll Adhesive Lined Industrial Marine Grade Dual Wall Heat Shrink Tube Waterproof and Sealed Black (1-1/4 inches(30 mm), 30 Feet)

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 TubeFor 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 TubingAdhesive 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.

• 3:1 Shrink Ratio: Shrink tubing will become one-third of its original size when heat is applied, more resistant to stretching and vibration than regular heat shrink, and has more tensile strength
• Dual Wall Shrink Tube: Reliable and long-protected adhesive-lined heat shrink tubing consisting of two layers, waterproof and sealed
• Flame-retardant and Low Smoke: Electrical shrink wrap tubing is made of polyolefin and an inner layer consists of a meltable adhesive, that withstands temperatures of -67 to 257 degrees Fahrenheit (-55 to 125 degrees Celsius)
• Easy to Use: Simply slide heat shrink tube over your connection point and apply heat. Make professional insulated connections in seconds
• Widely used: Heat shrink tubing is mainly used for electrical insulation of wires, solder joints, connectors, and terminals, heat shrink can also be used to prevent damage, strain relief, bundling wires, etc.
• The size of this heat shrink tubing is marked by its round inner diameter (diameter when round) and is shipped in a flattened state (flat width). For example, a heat shrink tubing labeled as “2 inches (50mm) diameter” will have a flat width of approximately 3 inches (75mm). Please select the appropriate size based on the round inner diameter.