20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation
20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation
20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation
20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation
20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation
20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation
20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation
20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation
20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation
20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation
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20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation

20mm Heat Shrink Tubing 2:1 – Electrical Wire Sleeve for Cable Wrap & Insulation

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Beschreibung

20mm Heat Shrink Tubing — Reliable Wire Insulation for Electrical & Automotive Projects

Loose wire ends, exposed connectors, and tangled cable bundles are a frustration for any DIYer, auto mechanic, or marine electrician. Whether you're rewiring a car harness, protecting a splice in a boat, or tidying up a home workshop project, having the right heat shrink tubing on hand makes the difference between a clean, lasting repair and one that fails under heat or moisture.

Each listing covers a single continuous length of 20mm (≈0.79") inner diameter heat shrink tubing with a 2:1 shrink ratio, available in lengths of 1 Metre (≈39.4"), 2 Metre (≈78.7"), 5 Metre (≈196.9"), and 10 Metre (≈393.7"). Made from polyolefin material, it shrinks down to approximately 10mm (≈0.39") when heat is applied, forming a tight, insulating sleeve. Choose from 7 colors — Black, White, Red, Green, Yellow, Blue, and Transparent — to suit your color-coding needs.

This 20mm heat shrink tubing is ideal for bundling automotive wiring harnesses, insulating large-gauge wire splices, protecting marine electrical connections from moisture, and organizing cable management in workshops or control panels. Its flexibility and consistent shrink performance make it a go-to solution for electrical wire wrap and cable sleeve applications.

ℹ️ Compatibility: Fits wire bundles and connectors with an outer diameter up to 20mm (≈0.79"). After shrinking, inner diameter is typically ~10mm (≈0.39"). Verify your cable bundle diameter before selecting a length.

✅ Key Features of These 20mm Heat Shrink Tubing Sleeves

  • 🔥2:1 Shrink Ratio — Shrinks from 20mm down to approximately 10mm, creating a firm, conforming fit around wires, terminals, and connectors for secure electrical insulation.
  • 🎨7 Color Options — Available in Black, White, Red, Green, Yellow, Blue, and Transparent, making color-coded wire identification and cable organization straightforward on any job.
  • 📏4 Length Choices — Select 1m, 2m, 5m, or 10m to match your project scale, from a single automotive wire repair to a full wiring harness sleeve job.
  • 🛡️Moisture & Abrasion Resistance — Once shrunk, the polyolefin sleeve forms a protective barrier that helps guard connections against dust, moisture ingress, and mechanical abrasion in automotive and marine environments.
  • ⚡Electrical Insulation — Provides a consistent dielectric layer over splices, terminals, and exposed conductors, reducing the risk of short circuits in low-voltage electrical wire wrap applications.
  • ✂️Easy to Cut & Apply — Cuts cleanly with standard scissors or a utility knife; shrinks evenly with a heat gun, making it practical for both professional electricians and home DIY cable sleeve projects.

📐 Technical Specifications — 20mm Heat Shrink Tubing

Product Type Heat Shrink Tubing / Wire Sleeve
Inner Diameter (Before Shrink) 20mm (≈0.79")
Inner Diameter (After Shrink) ~10mm (≈0.39") — typically
Shrink Ratio 2:1
Material Polyolefin (generally)
Available Colors Black, White, Red, Green, Yellow, Blue, Transparent
Available Lengths 1m (≈39.4"), 2m (≈78.7"), 5m (≈196.9"), 10m (≈393.7")
Activation Temperature Typically ~90°C (194°F); full shrink ~120°C (248°F)
Recommended Tool Heat gun (lighter usable with care)
Compliance / Certifications Contact us to confirm
Suitable Applications Automotive wiring, marine electrical, DIY cable management, wire bundling
⚠️ Note: Specifications such as wall thickness and exact shrink temperature may vary slightly by color. Contact us to confirm specs for safety-critical or regulated applications.

❓ Frequently Asked Questions

How do I choose the right length of heat shrink tubing?

Measure the section of wire or connector you need to cover and add at least 10–15mm (≈0.5") of overlap on each end. For longer cable runs, the 5 Metre or 10 Metre options offer the best value. As a reference: 1 Metre ≈ 39.4", 2 Metre ≈ 78.7", 5 Metre ≈ 196.9", 10 Metre ≈ 393.7".

What does 2:1 shrink ratio mean?

A 2:1 ratio means the tubing shrinks to approximately half its original inner diameter when heat is applied. This 20mm tubing will typically shrink down to around 10mm (≈0.39"), creating a snug, secure fit over wires, connectors, or terminals.

What wire or cable sizes does 20mm heat shrink tubing fit?

This tubing has a 20mm (≈0.79") inner diameter before shrinking, making it generally suitable for wire bundles, connectors, and terminals with an outer diameter up to approximately 20mm. After shrinking, it typically fits down to around 10mm. Check your cable bundle diameter before ordering.

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

Yes. Heat shrink tubing is commonly used in automotive wiring, marine electrical systems, and outdoor installations. Once shrunk, it provides a moisture-resistant barrier that helps protect connections from dust, moisture, and abrasion. For fully waterproof applications, look for adhesive-lined variants.

What temperature is needed to shrink this tubing?

Standard polyolefin heat shrink tubing typically activates at around 90°C (194°F) and fully shrinks at approximately 120°C (248°F). A heat gun is the recommended tool. A lighter or match can work in a pinch but may cause uneven shrinking or scorching.

Is this tubing RoHS compliant and safe for electrical use?

This heat shrink tubing is generally made from polyolefin material, which is widely used in electrical insulation applications. For specific compliance certifications (RoHS, UL, etc.), please contact us to confirm before use in regulated or safety-critical applications.

Why are there different colors available?

Color-coding is a standard practice in electrical work to identify wire functions, voltage levels, or circuit groups at a glance. Having multiple colors (Black, White, Red, Green, Yellow, Blue, Transparent) lets you organize and label wiring harnesses without additional markers or tape.

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

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