2:1 Heat Shrink Tubing – 3.5mm to 7mm, 7 Colors, Weatherproof Wire Sleeving
2:1 Heat Shrink Tubing – 3.5mm to 7mm, 7 Colors, Weatherproof Wire Sleeving
2:1 Heat Shrink Tubing – 3.5mm to 7mm, 7 Colors, Weatherproof Wire Sleeving
2:1 Heat Shrink Tubing – 3.5mm to 7mm, 7 Colors, Weatherproof Wire Sleeving
2:1 Heat Shrink Tubing – 3.5mm to 7mm, 7 Colors, Weatherproof Wire Sleeving
2:1 Heat Shrink Tubing – 3.5mm to 7mm, 7 Colors, Weatherproof Wire Sleeving
Roll over image to zoom in Click on image to zoom
2:1 Heat Shrink Tubing – 3.5mm to 7mm, 7 Colors, Weatherproof Wire Sleeving2:1 Heat Shrink Tubing – 3.5mm to 7mm, 7 Colors, Weatherproof Wire Sleeving2:1 Heat Shrink Tubing – 3.5mm to 7mm, 7 Colors, Weatherproof Wire Sleeving2:1 Heat Shrink Tubing – 3.5mm to 7mm, 7 Colors, Weatherproof Wire Sleeving2:1 Heat Shrink Tubing – 3.5mm to 7mm, 7 Colors, Weatherproof Wire Sleeving2:1 Heat Shrink Tubing – 3.5mm to 7mm, 7 Colors, Weatherproof Wire Sleeving

2:1 Heat Shrink Tubing – 3.5mm to 7mm, 7 Colors, Weatherproof Wire Sleeving

HomeDIYer
No reviews

By HomeDIYer®

Price:
$2.83 USD
Stock:
In stock (500 units), ready to be shipped

Payment & Security

Amazon American Express Apple Pay Bancontact Diners Club Discover Google Pay iDEAL Wero Mastercard PayPal Shop Pay USDC Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Quantity Discount Promotion
🎯 BULK DISCOUNT: Buy More, Save More!
Buy 2 Items
5% OFF
Buy 4 Items
10% OFF
Buy 6 Items
15% OFF
✅ Auto-discount • 🔄 Mix & match
Expert

DIY Expert Support

Get fitment advice & recommendations

Mon-Fri, 8:30AM-8PM
WhatsApp WhatsApp Email
⚡
24-Hour Fast Ship
🚚
Arrives in 3-14 days
🌍
Global Reach
↩️
30-Day Returns
🌱 1 tree planted with every purchase

Description

2:1 Heat Shrink Tubing — Reliable Weatherproof Wire Insulation for Every Project

Dealing with exposed wire ends, loose connectors, or bare solder joints is a frustration every DIYer, auto technician, and electrician knows well. Whether you're repairing a trailer harness, protecting marine wiring, or tidying up a home electrical project, unprotected connections invite corrosion, shorts, and failures. This 2:1 heat shrink tubing gives hobbyists, tradespeople, and repair professionals a clean, durable solution that goes on fast and holds up long-term.

Each order includes your selected length of polyolefin heat shrink tubing in your chosen diameter and color. Sizes range from 3.5mm to 7mm (≈0.14" to 0.28") in the expanded state, shrinking to approximately half that diameter at a 2:1 ratio. Available in 7 colors — White, Red, Green, Blue, Transparent, Yellow, and Black — and in lengths of 1 meter (≈3.3 ft), 5 meters (≈16.4 ft), 10 meters (≈32.8 ft), 20 meters (≈65.6 ft), and 50 meters (≈164 ft). The tubing is made from flexible polyolefin, which offers good dielectric strength and resistance to moisture, chemicals, and abrasion.

Typical use cases include automotive and motorcycle wiring repairs, marine and RV electrical connections, home appliance wire splicing, and color-coded cable organization in control panels or electronics enclosures. The color variety makes this tubing especially useful for wire identification in multi-conductor installations — a common need in trailer wiring, solar panel systems, and custom LED builds.

🔌 Compatibility: Fits standard copper and aluminum wires, terminals, connectors, and solder joints. Suitable for automotive, marine, residential, and low-voltage DC applications. Verify expanded diameter against your wire OD before ordering.

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

  • 🔥2:1 Shrink Ratio — Shrinks to approximately half its expanded diameter, creating a tight, conforming fit around wires, connectors, and terminals for secure insulation.
  • 🌧️Weatherproof Protection — Polyolefin construction resists moisture, dust, and mild chemicals, making it suitable for outdoor wiring, automotive underhood use, and marine electrical connections.
  • 🎨7 Color Options — Available in White, Red, Green, Blue, Transparent, Yellow, and Black for easy color-coded wire identification in multi-conductor cable harnesses and control panels.
  • 📏Wide Size Range — Covers 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, and 7mm expanded diameters, accommodating a broad range of wire gauges and connector sizes in a single product line.
  • ⚡Good Dielectric Strength — Provides electrical insulation to help prevent shorts and current leakage at splices, solder joints, and exposed conductor ends in low-voltage wiring applications.
  • ✂️Cut-to-Length Flexibility — Available in rolls from 1 to 50 meters, so you can order exactly what your project requires — from a single repair to a full wiring harness installation.

📐 Technical Specifications — 2:1 Heat Shrink Tubing

Material Polyolefin
Shrink Ratio 2:1
Expanded Diameter Options 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm
Recovered Diameter (approx.) Typically 50% of expanded diameter (e.g., 6mm → ~3mm)
Available Colors White, Red, Green, Blue, Transparent, Yellow, Black
Available Lengths 1m (≈3.3 ft), 5m (≈16.4 ft), 10m (≈32.8 ft), 20m (≈65.6 ft), 50m (≈164 ft)
Shrink Temperature Typically begins at ~70–90°C (158–194°F); full recovery at ~120°C (248°F)
Operating Temperature Range See variant options / Contact us to confirm
Voltage Rating See variant options / Contact us to confirm
Wall Thickness (recovered) See variant options / Contact us to confirm
Application Method Heat gun, hot air blower (open flame not recommended)
Typical Use Automotive wiring, marine electrical, DIY repairs, cable organization
⚠️ Note: Voltage rating and recovered wall thickness vary by diameter. If your application has specific electrical or mechanical requirements, please contact us to confirm suitability before ordering.

❓ Frequently Asked Questions

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

Measure the outer diameter of the wire or connector before shrinking. Choose a tubing size whose expanded inner diameter is slightly larger than your component — typically 10–20% larger. For example, for a 3mm wire, 3.5mm or 4mm tubing generally works well. After shrinking at a 2:1 ratio, the tubing will conform tightly around the wire.

What does 2:1 shrink ratio mean?

A 2:1 shrink ratio means the tubing will shrink to approximately half its original expanded diameter when heat is applied. For example, 6mm tubing will shrink down to roughly 3mm, creating a snug, secure fit around the wire or component.

What temperature is needed to shrink this tubing?

This tubing generally begins to shrink at around 70–90°C (158–194°F) and fully recovers at approximately 120°C (248°F). A heat gun is the recommended tool. Avoid open flames when possible, as uneven heat can damage the tubing or the wire insulation beneath.

Is this heat shrink tubing waterproof or suitable for outdoor use?

This tubing provides weatherproof protection once fully shrunk, making it suitable for outdoor, automotive, and marine wiring applications. It helps resist moisture, dust, and minor abrasion. For fully submersed or high-pressure water environments, an adhesive-lined (3:1) variant is typically recommended.

What wire types and materials is this tubing compatible with?

This heat shrink tubing is compatible with copper, aluminum, and most standard wire insulation materials. It works with single-conductor wires, multi-conductor cables, connectors, terminals, and solder joints. It is generally suitable for use with standard PVC and XLPE insulated wires.

How much length do I need for my project?

For small repairs or a few connections, 1 meter is typically sufficient. For automotive wiring harnesses or larger installations, 10–20 meters is a common choice. The 50-meter rolls offer the best per-meter value for professional or high-volume use. We recommend buying slightly more than your estimated need to account for trimming and test cuts.

Can I use this tubing for automotive wiring repairs?

Yes. This heat shrink tubing is widely used in automotive wiring repairs, trailer wiring, and under-hood applications. It provides insulation, strain relief, and protection against vibration and moisture. Ensure the size you select fits over your connectors before shrinking.

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

You may also like

Recently viewed