Heat Shrink Tubing Cable Adhesive 3:1 Heatshrink Sleeving Tube Car Φ1.6mm-Φ85mm

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Heat Shrink Tubing Cable Adhesive 3:1 Heatshrink Sleeving Tube Car Φ1.6mm-Φ85mm

Name: Heat Shrink Tubing Cable Adhesive 3:1 Heatshrink Sleeving Tube Car Φ1.6mm-Φ85mm
Brand: HomeDIYer
Price: 5.52 USD
Availability: InStock

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Diameter(mm): Φ1.6mm

Product Colour: Black

Length (M): 5M

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$5.52 USD

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3:1 Adhesive Heat Shrink Tubing — Dual-Wall Waterproof Sleeving for Wiring, Automotive & Marine Use

When exposed wire joints, corroded terminals, or unprotected cable runs become a liability in your project, a reliable heat shrink solution makes all the difference. Whether you're a DIYer rewiring a vehicle, an electrician sealing outdoor junction boxes, or a hobbyist protecting delicate electronics, this 3:1 adhesive heat shrink tubing delivers a tight, moisture-proof seal that standard single-wall tubing simply cannot match.

This dual-wall heat shrink tubing features an outer polyolefin shell and an inner hot-melt adhesive lining. Available in 17 diameters ranging from Φ1.6mm (approx. 1/16 in) to Φ85mm (approx. 3-3/8 in), with lengths of 1M, 2M, 5M, and 10M per roll. Eight color options — Black, White, Red, Green, Yellow, Blue, Transparent, and Orange — support color-coded wiring and visual identification.

Typical applications include automotive wiring harness repair, marine cable protection against saltwater ingress, outdoor electrical junction sealing, and workshop tool cord reinforcement. The 3:1 shrink ratio accommodates irregular connector shapes and stepped cable diameters, making it a go-to choice for heat shrink tubing for wiring harness and heat shrink tubing for marine use.

⚡ Compatible with standard heat guns (typically 90–120°C activation). Suitable for copper, aluminum, and tinned conductors. Not recommended for bare contact with live AC mains without additional insulation layers.

✅ Key Features of These Adhesive Heat Shrink Tubes

3:1 Shrink Ratio: Recovers to one-third of its supplied diameter, conforming tightly around stepped connectors, irregular shapes, and multi-conductor bundles.
Dual-Wall Construction: Outer polyolefin layer provides mechanical abrasion resistance; inner hot-melt adhesive flows into voids and bonds to the substrate for a watertight seal.
Wide Diameter Range: 17 sizes from Φ1.6mm to Φ85mm cover everything from fine instrument wire to large conduit and cable bundles.
8 Color Options: Black, White, Red, Green, Yellow, Blue, Transparent, and Orange enable color-coded identification across complex wiring systems.
UV & Chemical Resistance: Polyolefin outer wall resists UV degradation, oils, and common workshop solvents, extending service life in outdoor and under-hood environments.
Flexible Length Selection: Choose 1M, 2M, 5M, or 10M rolls to match your project scale — minimize waste on small repairs or stock up for production runs.

📐 Technical Specifications — Adhesive Heat Shrink Tubing

Material (Outer Wall)	Polyolefin
Inner Lining	Hot-melt adhesive (dual-wall)
Shrink Ratio	3:1
Available Diameters	Φ1.6 / 2.4 / 3.2 / 4 / 4.8 / 6.4 / 7.9 / 9.5 / 12.7 / 15.4 / 19.1 / 25.4 / 30 / 39 / 50 / 65 / 85 mm
Available Colors	Black, White, Red, Green, Yellow, Blue, Transparent, Orange
Available Lengths	1M, 2M, 5M, 10M
Activation Temperature	Typically 90–120°C (194–248°F)
Operating Temperature Range	Typically −55°C to +125°C (−67°F to +257°F)
Voltage Rating	See variant options
Wall Thickness (recovered)	See variant options
Weight	See variant options

❓ Frequently Asked Questions

How do I choose the right diameter for my cable or connector?

Measure the largest outer diameter of the object you need to cover — the connector body, cable jacket, or terminal. Select a supplied (pre-shrink) diameter that is at least 10–20% larger than that measurement to allow the tubing to slide on easily. After shrinking at a 3:1 ratio, the recovered diameter will be approximately one-third of the supplied size, so ensure the recovered diameter is smaller than your cable OD for a snug seal.

What heat source should I use to shrink this tubing?

A standard heat gun set to 90–120°C is the recommended tool. Move the heat gun steadily along the tubing from one end to the other to activate the adhesive evenly and prevent scorching. A lighter or open flame can be used in a pinch for small diameters, but uneven heat may cause bubbling or incomplete adhesive flow. Avoid exceeding 200°C to prevent damage to the outer wall.

Is this tubing waterproof after shrinking?

Yes. The inner hot-melt adhesive melts and flows into gaps around the conductor or connector during shrinking, creating a moisture-resistant seal. This makes it suitable for outdoor wiring, marine cable protection, and under-hood automotive applications where water ingress is a concern. For full submersion applications, verify the specific IP rating required for your use case.

Can I use this tubing on automotive wiring harnesses?

Yes. The polyolefin outer wall resists engine oils, fuels, and common automotive fluids. The 3:1 shrink ratio accommodates the stepped profiles of automotive connectors and multi-pin plugs. Smaller diameters (Φ1.6mm–Φ6.4mm) are well-suited for individual wire protection, while larger sizes (Φ19.1mm–Φ50mm) cover harness bundles and conduit ends.

How does the 3:1 ratio compare to standard 2:1 heat shrink?

Standard 2:1 tubing shrinks to half its supplied diameter, which works well for uniform cylindrical cables. A 3:1 ratio provides significantly more recovery, making it the better choice when covering connectors, splices, or cable ends where the diameter changes abruptly. The dual-wall adhesive lining also adds a sealing function that single-wall 2:1 tubing does not provide.

What colors are available and why does color selection matter?

Eight colors are available: Black, White, Red, Green, Yellow, Blue, Transparent, and Orange. Color coding is a standard practice in electrical and automotive wiring to identify circuit function, polarity, or phase at a glance — reducing troubleshooting time and wiring errors. Transparent tubing allows visual inspection of the underlying conductor or label without removing the sleeve.

Can this tubing be used outdoors or in marine environments?

Yes. The polyolefin outer wall offers UV resistance and withstands exposure to saltwater spray, making it a practical choice for marine cable protection, outdoor junction boxes, and garden lighting installations. For prolonged direct UV exposure, Black is typically the most UV-stable color option due to carbon black content in the formulation.

🛒 Select your Diameter, Color, and Length above, then add to cart.

Heat Shrink Tubing Cable Adhesive 3:1 Heatshrink Sleeving Tube Car Φ1.6mm-Φ85mm

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Description

3:1 Adhesive Heat Shrink Tubing — Dual-Wall Waterproof Sleeving for Wiring, Automotive & Marine Use

✅ Key Features of These Adhesive Heat Shrink Tubes

📐 Technical Specifications — Adhesive Heat Shrink Tubing

❓ Frequently Asked Questions

Heat Shrink Tubing Cable Adhesive 3:1 Heatshrink Sleeving Tube Car Φ1.6mm-Φ85mm

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