Clear Polyolefin Heat Shrink Tubing 3:1 Adhesive Glue Lined Tube Φ1.6 - Φ39mm

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Clear Polyolefin Heat Shrink Tubing 3:1 Adhesive Glue Lined Tube Φ1.6 - Φ39mm

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Diameter(Unshrunk): Φ1.6mm

Length(M): 1

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$2.71 USD

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In stock (500 units), ready to be shipped

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Clear Polyolefin 3:1 Heat Shrink Tubing — Adhesive Glue Lined for Reliable Wire Protection

When exposed wiring, corroded terminals, or poorly sealed cable joints become a liability in your workshop or field installation, you need a tubing solution that does more than just shrink. DIYers, electricians, and automotive technicians working on marine wiring, outdoor cable runs, or under-hood harnesses face the constant challenge of moisture ingress and mechanical abrasion — problems that standard single-wall tubing simply cannot solve.

This clear polyolefin heat shrink tubing features a dual-wall construction: a rigid outer polyolefin shell with a 3:1 shrink ratio and an inner adhesive glue lining that melts and flows during heating to create a watertight, strain-relieved seal. Available in unshrunk diameters from Φ1.6mm (approx. 1/16 in) to Φ39mm (approx. 1-1/2 in), with lengths from 1M to 50M per roll, it covers everything from fine instrument wire to large conduit bundles.

Typical applications include waterproofing automotive wire splices and connector boots, sealing marine cable penetrations against saltwater, protecting outdoor low-voltage landscape wiring, and reinforcing DIY battery pack leads — all scenarios where a clear, adhesive-lined heat shrink tubing for wire repair delivers a professional, long-lasting result.

⚡ Compatibility: Suitable for copper, aluminum, and tinned wire conductors. Compatible with standard heat guns operating at 90°C–200°C (194°F–392°F). Not recommended for continuous exposure above 125°C or direct contact with open flame.

✅ Key Features of These Clear Adhesive-Lined Heat Shrink Tubes

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3:1 Shrink Ratio — Fits a Wide Range of Diameters

The 3:1 ratio means each tube shrinks to one-third of its unshrunk diameter, giving you flexibility to cover connectors, solder joints, and irregular bundle shapes without needing multiple sizes on hand.

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Adhesive Glue Inner Wall — Waterproof Seal

The hot-melt adhesive lining flows into voids and around conductors as it heats, forming a moisture-resistant barrier rated for outdoor and marine environments where condensation and water ingress are ongoing concerns.

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Clear Polyolefin Outer Shell — Visual Inspection Without Removal

The transparent outer layer lets you verify wire color coding, labeling, and solder joint integrity after installation — a practical advantage during maintenance and troubleshooting.

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Wide Diameter Range — Φ1.6mm to Φ39mm

From fine instrument leads at Φ1.6mm (~1/16 in) to large conduit bundles at Φ39mm (~1-1/2 in), the full size range covers the majority of residential, automotive, and light industrial wiring tasks in a single product line.

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Flexible After Shrinking — Resists Cracking in Cold Conditions

Polyolefin retains flexibility after heat application, making it suitable for installations subject to vibration, flexing, or temperature cycling — such as vehicle wiring harnesses and outdoor junction boxes.

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Cut-to-Length Rolls — Reduce Waste on Every Job

Available in 1M, 3M, 5M, 10M, 20M, 30M, and 50M lengths, you can order exactly what your project requires and cut each piece to the precise length needed, minimizing offcuts and material cost.

📐 Technical Specifications — Heat Shrink Tubing

Material	Dual-wall polyolefin with hot-melt adhesive inner lining
Shrink Ratio	3:1
Unshrunk Diameter Range	Φ1.6mm – Φ39mm (approx. 1/16 in – 1-1/2 in)
Shrunk Diameter Range	Typically Φ0.5mm – Φ13mm (varies by size; see variant options)
Available Lengths	1M, 2M, 3M, 4M, 5M, 6M, 8M, 10M, 20M, 30M, 50M
Operating Temperature	-55°C to +125°C (-67°F to +257°F)
Shrink Temperature	Typically 90°C–120°C (194°F–248°F)
Color	Clear (transparent)
Flame Rating	See variant options
Wall Thickness (after shrink)	See variant options
Adhesive Type	Hot-melt thermoplastic adhesive
Application	Wire insulation, waterproofing, strain relief, cable bundling

❓ Frequently Asked Questions

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

Measure the outer diameter of your wire, connector, or bundle before shrinking. Select a tubing size whose unshrunk diameter is at least 10–20% larger than your measured diameter to allow easy insertion. After shrinking at 3:1, the tubing will conform tightly. For example, a Φ4mm unshrunk tube is suitable for conductors or bundles up to approximately 3.5mm in diameter.

What heat source should I use to shrink this tubing?

A heat gun set to 90°C–120°C (194°F–248°F) is the recommended tool. Keep the nozzle moving evenly around the tubing to activate the adhesive uniformly and avoid scorching. A lighter or torch can be used in the field but requires careful distance control to prevent burning the clear outer layer.

Is this tubing waterproof after shrinking?

Yes. The inner hot-melt adhesive flows into gaps and around conductors during heating, creating a moisture-resistant seal once cooled. This makes it suitable for outdoor cable runs, marine wiring, and underground splice protection where water ingress is a concern. For full submersion applications, verify the specific variant's IP rating with us before ordering.

Can I use this on automotive wiring and battery terminals?

Yes. The polyolefin material and adhesive lining are compatible with standard automotive wire insulation, copper terminals, and tinned connectors. The tubing withstands the vibration and temperature cycling typical of engine bays and chassis wiring. Ensure the conductor and insulation are rated for the same temperature range before applying.

What is the difference between 3:1 and 2:1 heat shrink tubing?

A 3:1 ratio means the tubing shrinks to one-third of its original diameter, compared to one-half for 2:1 tubing. This larger shrink range makes 3:1 tubing more versatile — it can cover connectors with flanges, solder joints with added bulk, or irregular shapes that 2:1 tubing would not seal tightly. The adhesive lining in this product further enhances the seal regardless of minor surface irregularities.

How do I select the right length for my project?

For single splices or terminal repairs, a 1M or 3M roll is typically sufficient. For wiring harness projects, panel builds, or batch production work, 10M–50M rolls reduce per-meter cost and minimize the number of joins in a continuous run. Cut each piece to the required length before heating — the tubing does not stretch back once shrunk.

Will the clear tubing yellow or become opaque over time?

Polyolefin is inherently UV-resistant compared to PVC, but prolonged direct sunlight exposure over years may cause slight yellowing in any clear polymer. For installations in permanent outdoor or high-UV environments, consider adding a UV-protective conduit or sleeve over the tubing for long-term clarity retention.

🛒 Select your diameter and length above, then add to cart.

Clear Polyolefin Heat Shrink Tubing 3:1 Adhesive Glue Lined Tube Φ1.6 - Φ39mm

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Clear Polyolefin 3:1 Heat Shrink Tubing — Adhesive Glue Lined for Reliable Wire Protection

✅ Key Features of These Clear Adhesive-Lined Heat Shrink Tubes

📐 Technical Specifications — Heat Shrink Tubing

❓ Frequently Asked Questions

Clear Polyolefin Heat Shrink Tubing 3:1 Adhesive Glue Lined Tube Φ1.6 - Φ39mm

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