2:1 Heat Shrink Tubing — Electrical Wire Sleeving, 7 Colors, 11mm–50mm
2:1 Heat Shrink Tubing — Electrical Wire Sleeving, 7 Colors, 11mm–50mm
2:1 Heat Shrink Tubing — Electrical Wire Sleeving, 7 Colors, 11mm–50mm
2:1 Heat Shrink Tubing — Electrical Wire Sleeving, 7 Colors, 11mm–50mm
2:1 Heat Shrink Tubing — Electrical Wire Sleeving, 7 Colors, 11mm–50mm
2:1 Heat Shrink Tubing — Electrical Wire Sleeving, 7 Colors, 11mm–50mm
2:1 Heat Shrink Tubing — Electrical Wire Sleeving, 7 Colors, 11mm–50mm
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2:1 Heat Shrink Tubing — Electrical Wire Sleeving, 7 Colors, 11mm–50mm2:1 Heat Shrink Tubing — Electrical Wire Sleeving, 7 Colors, 11mm–50mm2:1 Heat Shrink Tubing — Electrical Wire Sleeving, 7 Colors, 11mm–50mm2:1 Heat Shrink Tubing — Electrical Wire Sleeving, 7 Colors, 11mm–50mm2:1 Heat Shrink Tubing — Electrical Wire Sleeving, 7 Colors, 11mm–50mm2:1 Heat Shrink Tubing — Electrical Wire Sleeving, 7 Colors, 11mm–50mm2:1 Heat Shrink Tubing — Electrical Wire Sleeving, 7 Colors, 11mm–50mm

2:1 Heat Shrink Tubing — Electrical Wire Sleeving, 7 Colors, 11mm–50mm

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Beschreibung

2:1 Heat Shrink Tubing — Reliable Electrical Wire Insulation & Protection

Loose wire ends, exposed splices, and unprotected connectors are a safety hazard and a reliability problem — whether you're wiring a car, repairing a home appliance, or building a custom electronics project. This 2:1 heat shrink tubing gives electricians, automotive technicians, hobbyists, and DIYers a clean, professional way to insulate and protect wires of all sizes.

Each piece is made from flexible polyolefin material and is available in sizes ranging from 11mm to 50mm (≈0.43" to ≈1.97") unshrunk diameter, with a 2:1 shrink ratio that reduces the tubing to approximately half its original diameter when heat is applied. Choose from 1m (≈3.3 ft) or 5m (≈16.4 ft) lengths in 7 colors: Black, White, Red, Green, Yellow, Blue, and Clear.

Typical use cases include automotive wire harness repair, electrical panel wiring, marine cable protection, DIY electronics projects, and color-coded wire identification — making this heat shrink tubing for wires a versatile staple for any toolbox or workshop.

🔌 Compatibility: Suitable for copper, aluminum, and stranded wire. Works with standard heat guns. Fits wire gauges typically from AWG 4 to AWG 26 depending on size selected — see variant options for exact unshrunk diameter.

✅ Key Features of These 2:1 Heat Shrink Tubing Sleeves

  • 🔥2:1 Shrink Ratio — Shrinks to approximately half its unshrunk diameter, creating a snug, secure fit around wires, connectors, and terminals for reliable electrical insulation.
  • 📏Wide Size Range — Available from 11mm to 50mm (≈0.43" to ≈1.97") unshrunk, covering a broad range of wire gauges and connector sizes for automotive, marine, and electrical wiring applications.
  • 🎨7 Color Options — Black, White, Red, Green, Yellow, Blue, and Clear allow color-coded wire identification and organization, reducing wiring errors in complex harnesses.
  • 🧪Polyolefin Material — Flexible, flame-retardant polyolefin construction offers resistance to moisture, oils, and abrasion, making it suitable for both indoor and light outdoor electrical sleeving applications.
  • ⚡Electrical Insulation — Provides a protective insulating layer over wire splices, solder joints, and exposed terminals, generally rated for use in standard low-voltage electrical circuits up to 600V.
  • ✂️Cut-to-Length Flexibility — Supplied in 1m (≈3.3 ft) or 5m (≈16.4 ft) rolls that can be cut to any length, minimizing waste and giving you the exact coverage needed for each job.

📐 Technical Specifications — 2:1 Heat Shrink Tubing

Product Type 2:1 Heat Shrink Tubing / Electrical Sleeving
Material Polyolefin (flame-retardant)
Shrink Ratio 2:1
Size (Unshrunk Diameter) 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 18mm, 20mm, 22mm, 25mm, 28mm, 30mm, 35mm, 40mm, 45mm, 50mm
Size Range (Inches, approx.) ≈0.43" to ≈1.97"
Available Lengths 1m (≈3.3 ft) / 5m (≈16.4 ft)
Colors Available Black, White, Red, Green, Yellow, Blue, Clear
Shrink Temperature Typically 90–150°C (194–302°F)
Voltage Rating Typically up to 600V (contact us to confirm for specific sizes)
Application Method Heat gun (recommended); avoid open flame
Typical Applications Automotive wiring, electrical insulation, wire bundling, marine cable protection, DIY electronics
Country of Origin See variant options
⚠️ Size Note: The listed diameter is the unshrunk (before heat) inner diameter. After shrinking, the tubing will reduce to approximately half that diameter. Always measure your wire or connector before selecting a size. If you are unsure, contact us to confirm.

❓ Frequently Asked Questions

How do I choose the right heat shrink tubing size?

Measure the outer diameter of the wire or connector you need to cover. Choose a tubing size (unshrunk) that is slightly larger than that diameter. With a 2:1 shrink ratio, the tubing will shrink to approximately half its listed diameter when heat is applied. For example, 20mm (≈0.79") unshrunk tubing will shrink down to roughly 10mm (≈0.39"). When in doubt, size up slightly to allow easy installation before shrinking.

What does 2:1 shrink ratio mean?

A 2:1 shrink ratio means the tubing will shrink to approximately half its original (unshrunk) diameter when heat is applied. This is the most common ratio for general electrical insulation and wire bundling applications, providing a secure, conforming fit around most standard wire sizes and connectors.

What temperature is needed to shrink this tubing?

This tubing typically requires a temperature of around 90–120°C (194–248°F) to begin shrinking, and generally reaches full shrink at around 120–150°C (248–302°F). A heat gun is the recommended tool for even, controlled shrinkage. Avoid open flames, which can cause uneven shrinkage, scorching, or damage to the tubing or underlying wire insulation.

Can this heat shrink tubing be used outdoors or in wet environments?

Standard polyolefin heat shrink tubing generally provides good resistance to moisture and light UV exposure for occasional outdoor use. For prolonged outdoor, marine, or waterproof applications, an adhesive-lined (dual-wall) heat shrink tubing is typically recommended, as it creates a sealed, waterproof barrier. Contact us to confirm suitability for your specific environment.

What is the voltage rating of this tubing?

Polyolefin heat shrink tubing of this type is generally rated for use in standard low-voltage electrical circuits, typically up to 600V. For high-voltage, industrial, or safety-critical applications, please contact us to confirm the exact voltage rating for the specific size you need before purchasing.

Is this tubing compatible with automotive wiring and connectors?

Yes, 2:1 polyolefin heat shrink tubing is widely used in automotive wiring repairs, connector insulation, and wire harness protection. It is generally resistant to oils, fuels, and common automotive fluids, making it suitable for under-hood and interior wiring applications. The 7 available colors also make it easy to color-code circuits in complex automotive harnesses.

How do I convert the tubing sizes from mm to inches?

To convert mm to inches, divide by 25.4. Quick reference for this product's sizes: 11mm ≈ 0.43", 12mm ≈ 0.47", 15mm ≈ 0.59", 20mm ≈ 0.79", 25mm ≈ 0.98", 30mm ≈ 1.18", 40mm ≈ 1.57", 50mm ≈ 1.97". Always select a size slightly larger than your wire or connector's outer diameter before shrinking.

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

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