3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors
3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors
3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors
3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors
3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors
3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors
3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors
3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors
3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors
3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors
3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors
3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors
3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors
3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors
3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors
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3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors

3:1 Adhesive-Lined Heat Shrink Tubing — Dual-Wall, Φ1.6mm to Φ65mm, 8 Colors

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By HomeDIYer®

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$1.56 USD
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In stock (500 units), ready to be shipped

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Description

 

3:1 Adhesive-Lined Heat Shrink Tubing — Waterproof Dual-Wall Protection for Wires & Cables

Exposed wire splices, corroded connectors, and unprotected cable ends are among the most common causes of electrical failures in automotive, marine, and outdoor installations. Whether you're a professional electrician, a weekend DIYer, or a boat owner chasing down a wiring gremlin, you need a sealing solution that holds up to moisture, vibration, and temperature swings — not just a quick wrap of electrical tape.

This 3:1 adhesive-lined heat shrink tubing is a dual-wall construction: an outer polyolefin sleeve and an inner hot-melt adhesive layer. When heat is applied, the outer wall shrinks to approximately one-third of its original diameter while the inner adhesive melts and flows around the substrate, creating a watertight mechanical bond. Available in 15 diameters from Φ1.6mm (≈1/16") to Φ65mm (≈2-1/2"), 8 colors (Black, Red, White, Clear, Yellow, Blue, Green, Orange), and three cut lengths — 1 Meter (≈39"), 2 Meter (≈79"), and 5 Meter (≈197") — so you can match the exact size and quantity your project requires.

Typical use cases include sealing automotive wire harness splices and butt connectors, waterproofing marine cable penetrations and bilge pump wiring, protecting outdoor landscape lighting connections, strain-relieving industrial sensor cables, and bundling and color-coding multi-conductor runs in control panels. The color options also make this adhesive-lined heat shrink tubing useful for circuit identification in complex wiring systems.

⚡ Compatibility Note: This tubing is designed for use with copper and aluminum conductors, standard wire insulation materials, and most metal connectors. Verify expanded inner diameter against your cable OD before ordering. Not recommended for use over PTFE (Teflon) insulated wire without testing, as adhesion may vary.

✅ Key Features of These 3:1 Adhesive-Lined Heat Shrink Tubes

  • 💧Waterproof Adhesive Inner Layer — The hot-melt adhesive flows into gaps and irregular surfaces when heated, creating a moisture-resistant seal that standard single-wall heat shrink tubing cannot match — ideal for marine wiring and outdoor electrical connections.
  • 🔥3:1 Shrink Ratio — Shrinks to roughly one-third of its expanded diameter, allowing this dual-wall heat shrink tubing to fit over bulky connectors, solder joints, and stepped cable transitions that 2:1 tubing cannot accommodate.
  • 📏15 Diameters, One Product Line — From Φ1.6mm (≈1/16") for fine gauge wire up to Φ65mm (≈2-1/2") for large cable bundles and conduit ends, covering the full range of common automotive, marine, and industrial wiring needs.
  • 🎨8 Color Options for Circuit ID — Black, Red, White, Clear, Yellow, Blue, Green, and Orange allow color-coded wire identification in control panels, vehicle wiring harnesses, and multi-circuit outdoor installations without additional labeling.
  • ✂️Flexible Length Selection — Choose 1m (≈39"), 2m (≈79"), or 5m (≈197") per order to minimize waste on small repairs or stock up for larger wiring projects — no need to buy a full spool when a meter will do.
  • 🛡️Polyolefin Outer Wall — The outer sleeve is generally resistant to UV exposure, oils, and mild chemicals, making this adhesive-lined heat shrinkable tubing a practical choice for engine bays, outdoor fixtures, and marine environments where environmental exposure is a concern.

📐 Technical Specifications — Adhesive-Lined Heat Shrink Tubing

Product Type Dual-Wall Adhesive-Lined Heat Shrink Tubing
Shrink Ratio 3:1
Inner Layer Hot-melt adhesive (waterproof sealant)
Outer Layer Polyolefin
Available Diameters (Expanded ID) Φ1.6mm (≈1/16"), Φ2.4mm (≈3/32"), Φ3.2mm (≈1/8"), Φ4.8mm (≈3/16"), Φ6.4mm (≈1/4"), Φ7.9mm (≈5/16"), Φ9.5mm (≈3/8"), Φ12.7mm (≈1/2"), Φ15.4mm (≈5/8"), Φ19.1mm (≈3/4"), Φ25.4mm (≈1"), Φ30mm (≈1-3/16"), Φ39mm (≈1-1/2"), Φ50mm (≈2"), Φ65mm (≈2-1/2")
Available Colors Black, Red, White, Clear, Yellow, Blue, Green, Orange
Available Lengths 1 Meter (≈39"), 2 Meter (≈79"), 5 Meter (≈197")
Activation Temperature Typically 120°C (248°F) minimum; full shrink at approx. 150–175°C (302–347°F)
Recommended Tool Heat gun (open flame not recommended)
Typical Applications Wire splices, butt connectors, cable ends, marine wiring, automotive harnesses, outdoor electrical
Operating Temperature Range See variant options / Contact us to confirm for specific grades
Voltage Rating Contact us to confirm for your specific application
Country of Origin See variant options
⚠️ Sizing Tip: Always measure the outer diameter of your cable or connector before selecting a size. The diameter listed is the expanded (pre-shrink) inner diameter. After shrinking at 3:1, the tubing will cover objects down to approximately one-third of the listed size. If you are between sizes, select the larger diameter.

❓ Frequently Asked Questions

How do I choose the right diameter for my application?

Measure the outer diameter of the object you need to cover, then select a tubing size whose expanded (pre-shrink) inner diameter is at least 10–20% larger than that measurement. With a 3:1 shrink ratio, the tubing will shrink down to roughly one-third of its listed diameter. For example, Φ6.4mm (1/4") tubing shrinks to approximately Φ2.1mm. When in doubt, size up — you can always apply more heat to achieve a tighter fit.

What does "adhesive-lined" mean and why does it matter?

Adhesive-lined (dual-wall) heat shrink tubing has an outer polyolefin layer and an inner hot-melt adhesive layer. When heated, the outer layer shrinks while the inner adhesive melts and flows around the substrate, creating a waterproof, strain-relieving seal. This is generally more effective for outdoor, marine, and automotive applications than standard single-wall tubing.

Is this tubing suitable for outdoor or marine use?

Yes. The adhesive inner layer creates a moisture-resistant seal that is generally suitable for outdoor, marine, and automotive environments. The polyolefin outer layer typically offers resistance to UV, oils, and mild chemicals. For prolonged saltwater immersion or extreme chemical exposure, please confirm suitability with your specific application requirements.

What temperature is needed to shrink this tubing?

Dual-wall adhesive-lined polyolefin tubing typically activates at around 120°C (248°F) and fully shrinks and flows adhesive at approximately 150–175°C (302–347°F). A heat gun is recommended over an open flame for even, controlled shrinkage. Avoid overheating, which can scorch the tubing or damage the underlying wire insulation.

What wire gauge or cable sizes does each diameter fit?

As a general guide: Φ1.6mm typically fits 26–22 AWG wires; Φ2.4mm fits 22–18 AWG; Φ3.2mm fits 18–16 AWG; Φ4.8mm fits 16–14 AWG; Φ6.4mm fits 14–12 AWG; Φ9.5mm fits 10–8 AWG; Φ12.7mm fits 8–6 AWG. Larger sizes (Φ19.1mm–Φ65mm) are generally used for cable bundles, conduit ends, and connectors. Always measure your cable OD before ordering.

Can I use this for electrical splices and connector sealing?

Yes. Adhesive-lined heat shrink tubing is commonly used to seal wire splices, butt connectors, ring terminals, and cable ends. The melted adhesive fills gaps around irregular shapes, providing both electrical insulation and a mechanical strain-relief bond. It is widely used in automotive wiring, marine rigging, and outdoor electrical installations.

How do I convert the diameter sizes to inches?

Here are the approximate inch equivalents: Φ1.6mm ≈ 1/16", Φ2.4mm ≈ 3/32", Φ3.2mm ≈ 1/8", Φ4.8mm ≈ 3/16", Φ6.4mm ≈ 1/4", Φ7.9mm ≈ 5/16", Φ9.5mm ≈ 3/8", Φ12.7mm ≈ 1/2", Φ15.4mm ≈ 5/8", Φ19.1mm ≈ 3/4", Φ25.4mm = 1", Φ30mm ≈ 1-3/16", Φ39mm ≈ 1-1/2", Φ50mm ≈ 2", Φ65mm ≈ 2-1/2".

🛒 Select your diameter, color, and length above, then add to cart — ships from our US warehouse.

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