2:1 Black Heat Shrink Tubing — Diameter 10mm to 20mm, Cable Wire Wrap Sleeve
2:1 Black Heat Shrink Tubing — Diameter 10mm to 20mm, Cable Wire Wrap Sleeve
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2:1 Black Heat Shrink Tubing — Diameter 10mm to 20mm, Cable Wire Wrap Sleeve2:1 Black Heat Shrink Tubing — Diameter 10mm to 20mm, Cable Wire Wrap Sleeve

2:1 Black Heat Shrink Tubing — Diameter 10mm to 20mm, Cable Wire Wrap Sleeve

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Beschreibung

 

Black Heat Shrink Tubing 2:1 — Reliable Wire Protection from 10mm to 20mm

Exposed wire splices, frayed cable ends, and uninsulated connectors are a safety hazard in any project — whether you're rewiring a car, building a control panel, or tidying up a home electrical repair. This black heat shrink tubing gives DIYers, auto technicians, and electricians a clean, durable way to insulate and protect wiring without tape that unravels or zip ties that slip.

Each listing covers a single continuous length of tubing in your chosen diameter and length. The unshrunk diameter ranges from 10mm (≈3/8") to 20mm (≈25/32"), available in 1m (≈3.3 ft), 2m (≈6.6 ft), and 5m (≈16.4 ft) lengths. Made from flame-retardant polyolefin, this 2:1 ratio tubing shrinks to approximately half its listed diameter when heat is applied — no adhesives, no mess.

Typical applications include automotive wiring harness repair, marine cable bundling, battery terminal insulation, and general electrical wire sleeve protection. The matte black finish blends naturally with factory wiring and gives finished projects a professional look.

ℹ️ Compatibility Note: Select the unshrunk diameter that is at least 1.1× the outer diameter of your wire bundle. With a 2:1 shrink ratio, the tubing will shrink to approximately half its listed size. If you're unsure which size fits your application, contact us before ordering.

✅ Key Features of These Black Heat Shrink Tubing Sleeves

  • 🔥2:1 Shrink Ratio — Shrinks to approximately half its unshrunk diameter, creating a snug, form-fitting sleeve around wires, connectors, and terminals without gaps or loose ends.
  • 🛡️Flame-Retardant Polyolefin — Made from self-extinguishing polyolefin material that resists ignition and generally meets UL 224 VW-1 flame-retardant standards for electrical insulation applications.
  • 🚗Automotive-Grade Durability — Withstands vibration, heat cycling, and exposure to common automotive fluids, making it a go-to choice for car wire wrap heatshrink and wiring harness repair.
  • 💧Moisture & Abrasion Resistance — The shrunk sleeve forms a tight barrier against moisture ingress and physical abrasion, extending the service life of splices and cable ends in demanding environments.
  • 📏Wide Diameter Range — Available in nine unshrunk diameters from 10mm to 20mm, covering everything from medium wire bundles to large connector boots and battery cable insulation.
  • ✂️Easy to Cut and Apply — Cuts cleanly with scissors or a utility knife; shrinks evenly with a standard heat gun in seconds, with no special tools or adhesives required for most electrical cable heatshrink applications.

📐 Technical Specifications — Black Heat Shrink Tubing

Material Flame-retardant polyolefin
Color Black
Shrink Ratio 2:1
Unshrunk Diameter Options 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 18mm, 20mm
Shrunk Diameter (approx.) Typically 50% of unshrunk diameter (e.g., 20mm → ~10mm)
Available Lengths 1m (≈3.3 ft), 2m (≈6.6 ft), 5m (≈16.4 ft)
Shrink Temperature Typically begins at ~90°C (194°F); full shrink at ~120°C (248°F)
Operating Temperature Range See variant options / Contact us to confirm
Wall Thickness (shrunk) See variant options
Voltage Rating Contact us to confirm
Flame Retardancy Self-extinguishing polyolefin; generally meets VW-1 standard
Application Method Heat gun (recommended); avoid open flame
⚠️ Sizing Tip: Always measure your wire bundle's outer diameter before selecting a size. The unshrunk diameter should be comfortably larger than your bundle — the tubing cannot be re-expanded once shrunk.

❓ Frequently Asked Questions

How do I choose the right diameter for my wires?

Measure the outer diameter of the bundle or connector you need to cover, then select a tubing size whose unshrunk diameter is at least 1.1× that measurement. For example, a 10mm wire bundle would typically fit inside the 12mm or 13mm unshrunk tube. With a 2:1 shrink ratio, the tubing will generally shrink down to approximately half its listed diameter.

What shrink ratio does this tubing use?

This tubing has a 2:1 shrink ratio, meaning it will shrink to approximately half its original (unshrunk) diameter when heat is applied. For example, the 20mm unshrunk tube will typically shrink down to around 10mm.

What temperature is needed to shrink this tubing?

Polyolefin heat shrink tubing generally begins to shrink at around 70–90°C (158–194°F) and achieves full shrinkage at approximately 120°C (248°F). A heat gun is the recommended tool; avoid open flames as they can scorch the tubing.

Is this tubing suitable for outdoor or marine use?

Standard polyolefin heat shrink tubing provides good moisture resistance and is generally suitable for protected outdoor environments. For fully submersed or harsh marine applications, adhesive-lined (glue-lined) tubing is typically recommended for a watertight seal. Contact us to confirm the best option for your use case.

Is this tubing flame-retardant?

Yes. This tubing is made from flame-retardant polyolefin material, which means it will generally self-extinguish when the heat source is removed, making it suitable for automotive wiring, control panels, and other applications where fire safety is a concern.

Can I use this tubing on automotive wiring harnesses?

Yes. Black heat shrink tubing is widely used in automotive wiring harness repair, connector insulation, and cable bundling. The black color also helps the sleeve blend in with factory wiring. Sizes from 10mm to 20mm (unshrunk) are typically suitable for covering multi-wire bundles, relay connectors, and battery terminals.

How much length do I need to order?

Measure the total length of cable or connector you need to cover, then add at least 10–15% extra for overlap and trimming. For larger projects or repeated repairs, the 5-meter option generally offers the best value per meter.

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

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