100% Brand New and High Quality.

300PCS 3:1 Waterproof Dual Wall Adhesive Heat Shrink Wire Heatshrink Tubing Kits


Automotive & Marine Grade

Working Temperature Range  (-49°F to +249°F)

Flame Resistant Outer Material / Flame Retardant Inner Lining

Tensile strength: 10.4Mpa

Dielectric strength: 15 kV / mm

Flammability: Flame Retardant

Material: Polyolefin / Glue

Color:  Black

Inner Diameter(ID): 3/8", 1/4" ,3/16",1/8",3/32",1/16"

Length: 90mm  / 45mm

Quantity :300 sections in box

Shrink Ratio: 3:1 (Shrinks to 1/3 of its original diameter)




Package Included:

Box Size: Approx. 190*130*36mm/7.48*5.11*1.41''


The package includes:

 (quantity x single length x inner diameter provided )

150pcs *45mm* φ3/32"

80pcs * 45mm*φ1/8"

30pcs * 45mm x φ1/16"

20pcs * 90mm* φ3/16"

12pcs * 90mm* φ1/4"

8pcs * 90mm φ3/8"

- 1x Plastic Box




Adhesive lined shrink tubing is a 3:1 flexible tubing offering the advantages of integral, adhesive-lined construction. The tubing is made from flexible polyethylene with an internal layer of special thermoplastic adhesive. The heat-shrinkable outer wall is selectively cross-linked, while maintaining the high flow and excellent adhesion of the inner sealant liner. When heated in excess of 121ºC (250ºF), the tubing rapidly shrinks to a skintight fit, forcing the melted adhesive lining to flow and cover the substrate. The adhesive forms a flexible bond with a wide variety of rubbers, plastics and metals. Upon cooling, the adhesive solidifies, forming a permanent, non-drying, flexible and water resistant barrier. Adhesive reflow will occur at temperatures above 80ºC (176ºF). 


Heat Shrink Tubing Detail

[Safety and Environmental Protection]: Wonderful heat-shrinkable tubes are UL and CSA certified, RoHS compliant, free of formaldehyde

(HCHO), heavy metals and other harmful substances protecting you and your family from toxins

[The rubber liner has good sealing performance] Our heat-shrinkable tube has the advantages of good electrical insulation, good sealing, corrosion resistance and high temperature resistance. Anti-aging, tough, not easy to break.

[Easy and fast] You only need to heat it evenly with a hot air blower or a candle to make it shrink. It is a 3:1 heat shrink ratio and will shrink to the original 1/3.

[Versatile and DIY Helper]: High-quality heat shrink tubing, they can be used for solder joint protection, group of lines marking, resistance electric capacity reason protection etc. Note: Make sure temperature of your heat gun is up to 212℉(Fahrenheit), then glue inside will soften and seal the connection.

[Great Advantages ]: Our heat-shrinkable tube are with glue lined which has the advantages of good electrical insulation, good sealing, corrosion resistance and high temperature resistance. Anti-aging, tough, not easy to break.

[A wide range of applications] Shrink tube are mainly used for industrial, ship, wire links, anti-rust and anti-corrosion protection of solder joints, and audio and electrical DIY. Wire ends, harnesses, electronics protection and insulation treatment, fitness equipment parts and steel structure surface protection and so on.

[Note]: Please ignore the product description size on the picture label of the product packaging. This size is not related to the product inside the package. The size of the product is correct.


About 3:1 Ratio Heat Shrink Tubing

What is it good for? 

Industrial adhesive lined shrink tubing offers excellent protection for electronic components, wire splices, wire bundles and harness breakouts. Automotive, truck and marine wiring splices and harness breakouts are quickly and easily protected from harsh environments. 

What is Shrink Ratio?

Industrial adhesive lined shrink tubing has a 3:1 shrink ratio. This means that the starting diameter of the tubing as supplied is 3 times the fully contracted diameter if allowed to completely shrink. The wall thickness of the tubing is proportional to the percentage of shrinkage.