2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors
2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors
2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors
2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors
2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors
2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors
2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors
2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors
2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors
2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors
2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors
2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors
2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors
2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors
2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors
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2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors

2:1 Heat Shrink Tubing – Electrical Wire Sleeving, 20mm to 35mm, Multiple Colors

HomeDIYer
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By HomeDIYer®

Price:
$7.02 USD
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In stock (500 units), ready to be shipped

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Description

2:1 Heat Shrink Tubing — Reliable Insulation for Large-Diameter Wire Bundles

Loose wire ends, exposed splices, and unprotected cable bundles are a safety hazard in any electrical project. Whether you're rewiring a vehicle, tidying up a panel, or protecting outdoor cable runs, you need 2:1 heat shrink tubing that fits cleanly, shrinks evenly, and stays put. This listing is designed for DIYers, auto technicians, marine installers, and electricians who work with larger cable diameters and need a reliable, color-coded solution.

Each order includes a continuous length of polyolefin 2:1 heat shrink tubing in your chosen color and diameter. Available in six expanded inner diameters — 20mm (≈3/4"), 22mm (≈7/8"), 25mm (≈1"), 28mm (≈1-1/8"), 30mm (≈1-3/16"), and 35mm (≈1-3/8") — and four cut lengths: 1 meter (≈3.3 ft), 2 meters (≈6.6 ft), 5 meters (≈16.4 ft), and 10 meters (≈32.8 ft). Seven color options are available: Black, White, Red, Green, Yellow, Blue, and Transparent.

Typical applications include automotive wiring harness protection, marine cable sleeving, electrical panel wire management, outdoor conduit end sealing, and color-coded circuit identification in industrial or DIY installations. The 2:1 shrink ratio means the tubing shrinks to half its expanded diameter, creating a snug, protective sleeve around your cables.

🔌 Compatibility: Fits wire bundles and cables with an outer diameter up to the listed tube size. Measure your bundle before ordering — expanded inner diameter is the pre-shrink measurement. Suitable for use with standard polyolefin-compatible heat guns.

✅ Key Features of These 2:1 Heat Shrink Tubes

  • 🔥True 2:1 Shrink Ratio — Shrinks to exactly half its expanded diameter for a firm, uniform grip on wire bundles, cable splices, and connector boots.
  • 🎨7-Color Selection — Black, White, Red, Green, Yellow, Blue, and Transparent options make color-coded wire identification straightforward in automotive, marine, and panel wiring.
  • 📏Wide Diameter Range — Six sizes from 20mm to 35mm cover large wire bundles, conduit ends, and multi-conductor cable assemblies that standard small-diameter tubing can't handle.
  • 🌧️Moisture & Abrasion Resistance — Polyolefin construction provides a barrier against moisture ingress, light chemical exposure, and mechanical abrasion in outdoor and under-hood environments.
  • ✂️Cut-to-Length Flexibility — Order 1m, 2m, 5m, or 10m rolls and cut exact lengths on the job. No waste, no guessing — ideal for heat shrink tubing for electrical wiring projects of any scale.
  • ⚡Rated for General Electrical Use — Typically rated up to 600V, suitable for residential wiring repairs, automotive harness sleeving, and light industrial cable management applications.

📐 Technical Specifications — 2:1 Heat Shrink Tubing

Material Polyolefin
Shrink Ratio 2:1
Expanded Inner Diameter 20mm (≈3/4"), 22mm (≈7/8"), 25mm (≈1"), 28mm (≈1-1/8"), 30mm (≈1-3/16"), 35mm (≈1-3/8")
Available Lengths 1m (≈3.3 ft), 2m (≈6.6 ft), 5m (≈16.4 ft), 10m (≈32.8 ft)
Colors Black, White, Red, Green, Yellow, Blue, Transparent
Shrink Temperature Typically 90–120°C (194–248°F)
Voltage Rating Typically up to 600V — contact us to confirm
Wall Thickness (post-shrink) See variant options
Operating Temperature Range See variant options
Application Method Heat gun (recommended); avoid open flame
Suitable Environments Automotive, marine, outdoor, indoor electrical
⚠️ Note: Always measure your wire bundle's outer diameter before selecting a tube size. The listed diameter is the expanded (pre-shrink) inner diameter. For critical or high-voltage applications, please contact us to confirm specifications.

❓ Frequently Asked Questions

How do I choose the right diameter for my wires?

Measure the outer diameter of the wire or bundle before shrinking. Choose a tube whose expanded inner diameter is at least 20% larger than your wire. For example, a 20mm (≈3/4") tube is typically suitable for bundles up to about 16mm in diameter. After shrinking at a 2:1 ratio, it will grip the wire firmly.

What temperature is needed to shrink this tubing?

This tubing generally requires a heat source of around 90–120°C (194–248°F) to begin shrinking. A heat gun is recommended for even, controlled application. Avoid open flames, which can cause uneven shrinkage or scorching.

Can this heat shrink tubing be used outdoors or in automotive applications?

Yes. Polyolefin heat shrink tubing is generally resistant to moisture, UV exposure, and common automotive fluids, making it suitable for outdoor wiring, engine bays, and marine environments. For extreme chemical exposure, confirm compatibility with your specific environment.

What is the voltage rating of this tubing?

Polyolefin 2:1 heat shrink tubing typically carries a voltage rating of up to 600V, making it suitable for most residential, automotive, and light industrial wiring applications. Contact us to confirm the exact rating for your use case.

Is this tubing compatible with standard wire gauges and connectors?

Yes. The 20mm–35mm size range is compatible with larger wire bundles, conduit ends, cable splices, and connector boots. Sizes are measured as the expanded (pre-shrink) inner diameter, so always measure your cable bundle first.

Can I cut the tubing to a custom length?

Absolutely. The tubing can be cut cleanly with scissors or a utility knife before or after shrinking. Ordering a longer roll (5m or 10m) gives you the flexibility to cut exact lengths for each job.

What is the difference between the color options?

All color variants share the same material and shrink performance. Colors are useful for color-coding wire circuits — for example, using red for positive leads, black for ground, and other colors for signal or data lines. The transparent option lets you see the wire or label underneath.

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

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