White Heat Shrink Tubing — Clean, Reliable Insulation for Wire & Cable Work
Whether you're rewiring a vehicle, tidying up a home electrical panel, or finishing a DIY electronics project, exposed wire joints and bare connectors are a safety hazard you can't ignore. This white heat shrink tubing gives electricians, automotive technicians, and hands-on DIYers a clean, professional-looking solution that seals and protects in seconds.
Each order covers a single continuous length of tubing — available in diameters from φ1mm (≈0.039") to φ50mm (≈2"), in lengths of 1M (≈3.3 ft), 2M (≈6.6 ft), 3M (≈9.8 ft), 5M (≈16.4 ft), or 1.2M (≈3.9 ft) depending on the variant. Choose from three shrink ratios: 2:1 for standard wire insulation, 3:1 for connectors and solder joints, and 4:1 for heavy-duty or irregular-profile coverage. The tubing is made from polyolefin — a flexible, flame-retardant material that shrinks evenly when heat is applied.
Typical use cases include automotive wiring harness repair, marine cable bundling, PCB lead insulation, and home electrical DIY projects. The white finish makes it easy to write labels directly on the tubing — useful for circuit identification in control panels or junction boxes.
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Compatibility: Fits standard copper and aluminum wire, multi-conductor cables, solder joints, crimp connectors, and terminal ends. Select the diameter closest to — but larger than — your cable's outer diameter. Shrink ratios of 3:1 and 4:1 accommodate a wider range of cable sizes per tube.
✅ Key Features of These White Heat Shrink Tubes
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📐Wide Size Range — Diameters from φ1mm to φ50mm cover everything from fine gauge wire to large cable bundles, eliminating the need to stock multiple product lines.
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🔥Three Shrink Ratios — 2:1 for tight, uniform fits on standard wire; 3:1 for connectors and solder joints; 4:1 for heavy-duty applications where maximum diameter reduction is needed.
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⚡Polyolefin Construction — Flame-retardant, flexible after shrinking, and resistant to oils, solvents, and moisture — suitable for automotive wiring harness repair and indoor electrical work.
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🏷️White Finish for Easy Labeling — The clean white surface accepts permanent marker, making circuit identification and cable management straightforward in control panels and junction boxes.
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📏Cut-to-Length Flexibility — Available in 1M, 2M, 3M, 5M, and 1.2M rolls so you can cut exactly what you need for each connection without waste.
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🔧Even Shrink with Standard Heat Gun — Activates at typical polyolefin temperatures (generally 70–120°C / 158–248°F), compatible with any standard heat gun — no specialized tools required.
📐 Technical Specifications — White Heat Shrink Tubing
| Material |
Polyolefin (flame-retardant) |
| Color |
White |
| Shrink Ratios Available |
2:1 / 3:1 / 4:1 |
| Diameter Range (before shrink) |
φ1mm (≈0.039") — φ50mm (≈2") |
| Length Options |
1M (≈3.3 ft) / 1.2M (≈3.9 ft) / 2M (≈6.6 ft) / 3M (≈9.8 ft) / 5M (≈16.4 ft) |
| Activation Temperature |
Typically 70–90°C (158–194°F) |
| Full Shrink Temperature |
Typically ~120°C (248°F) |
| Wall Thickness |
See variant options |
| Minimum Shrink Diameter |
See variant options |
| Voltage Rating |
Contact us to confirm |
| Operating Temperature Range |
Typically -55°C to +125°C (-67°F to +257°F) |
| Flame Retardancy |
Generally meets UL 224 / RoHS standards (confirm per variant) |
| Application Tool |
Heat gun (recommended); avoid open flame |
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Sizing tip: Always measure your cable's outer diameter before ordering. The listed diameter is the before-shrink (expanded) inner diameter. For a snug fit, choose a tube diameter 10–20% larger than your cable OD.
❓ Frequently Asked Questions
How do I choose the right diameter for my wire or cable?
Measure the outer diameter of the wire or connector you need to cover. For a 2:1 ratio tube, choose a size that is at least 10–20% larger than the cable OD so it slides on easily before shrinking. For example, a 4mm cable typically works well with a φ6mm tube at 2:1 ratio. For 3:1 and 4:1 tubes, you have more flexibility — they can cover a wider range of diameters with a single size.
What shrink ratio should I choose — 2:1, 3:1, or 4:1?
A 2:1 ratio is the most common choice for standard wire insulation and bundling. A 3:1 ratio is generally used when you need to cover connectors, solder joints, or irregular shapes with a larger diameter difference. A 4:1 ratio is typically chosen for heavy-duty applications such as marine wiring, large connectors, or when maximum coverage is needed from a single tube size.
What temperature is needed to shrink this tubing?
Standard polyolefin heat shrink tubing typically activates at around 70–90°C (158–194°F) and fully shrinks at approximately 120°C (248°F). A heat gun is the recommended tool. Avoid open flames as they can cause uneven shrinking or scorching. Please confirm the exact activation temperature for your selected variant before use.
Can this heat shrink tubing be used outdoors or in wet environments?
Standard polyolefin heat shrink tubing generally provides good moisture resistance once fully shrunk, making it suitable for most indoor and light outdoor applications. For fully waterproof or submersion-rated protection, we recommend using adhesive-lined (dual-wall) heat shrink tubing instead. Contact us to confirm suitability for your specific environment.
Is this tubing compatible with automotive wiring?
Yes. This white heat shrink tubing is commonly used in automotive wiring harnesses, connector insulation, and under-hood cable management. The white color also makes it easy to label or mark circuits. It is generally rated for the temperature ranges found in standard automotive environments, though we recommend verifying compatibility for high-heat engine bay applications.
How do I convert the diameter sizes to inches?
Here are some common conversions from this product's size range:
- φ1mm ≈ 0.039" | φ2mm ≈ 5/64" | φ3mm ≈ 1/8" | φ4mm ≈ 5/32"
- φ6mm ≈ 1/4" | φ8mm ≈ 5/16" | φ10mm ≈ 3/8" | φ12mm ≈ 15/32"
- φ12.7mm = 1/2" | φ19.1mm = 3/4" | φ25.4mm = 1" | φ50mm ≈ 2"
For any other size, divide the mm value by 25.4 to get the inch equivalent.
What is the wall thickness of this heat shrink tubing?
Wall thickness varies by diameter and shrink ratio. Smaller diameters (φ1mm–φ6mm) typically have a wall thickness of 0.2–0.5mm before shrinking. Larger diameters generally have proportionally thicker walls. Please contact us to confirm the exact wall thickness for your selected size and ratio.
Can I use a lighter or hair dryer instead of a heat gun?
A hair dryer generally does not reach the temperatures needed to fully activate polyolefin heat shrink tubing and will typically produce an incomplete or uneven shrink. An open flame (lighter or torch) can work in a pinch but risks scorching or burning the tubing if not moved continuously. A dedicated heat gun is strongly recommended for consistent, professional results.
🛒 Select your diameter, shrink ratio, and length above, then add to cart — ships from our US warehouse.
