Blue 2:1 Heat Shrink Tubing — Φ0.6mm to Φ80mm, 1M to 25M
Blue 2:1 Heat Shrink Tubing — Φ0.6mm to Φ80mm, 1M to 25M
Blue 2:1 Heat Shrink Tubing — Φ0.6mm to Φ80mm, 1M to 25M
Blue 2:1 Heat Shrink Tubing — Φ0.6mm to Φ80mm, 1M to 25M
Blue 2:1 Heat Shrink Tubing — Φ0.6mm to Φ80mm, 1M to 25M
Blue 2:1 Heat Shrink Tubing — Φ0.6mm to Φ80mm, 1M to 25M
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Blue 2:1 Heat Shrink Tubing — Φ0.6mm to Φ80mm, 1M to 25MBlue 2:1 Heat Shrink Tubing — Φ0.6mm to Φ80mm, 1M to 25MBlue 2:1 Heat Shrink Tubing — Φ0.6mm to Φ80mm, 1M to 25MBlue 2:1 Heat Shrink Tubing — Φ0.6mm to Φ80mm, 1M to 25MBlue 2:1 Heat Shrink Tubing — Φ0.6mm to Φ80mm, 1M to 25MBlue 2:1 Heat Shrink Tubing — Φ0.6mm to Φ80mm, 1M to 25M

Blue 2:1 Heat Shrink Tubing — Φ0.6mm to Φ80mm, 1M to 25M

HomeDIYer
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By HomeDIYer®

Price:
$1.35 USD
Stock:
In stock (500 units), ready to be shipped

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Description

Blue 2:1 Heat Shrink Tubing — Clean, Reliable Wire Insulation from Φ0.6mm to Φ80mm

Exposed wire splices, loose connector ends, and unprotected cable bundles are a frustration for every electrician, hobbyist, and automotive technician. Whether you're repairing a frayed wire under the dashboard, organizing a control panel, or protecting outdoor cable runs, having the right heat shrink tubing on hand makes the difference between a clean, lasting repair and one that fails under stress.

This blue 2:1 heat shrink tubing is available in unshrunk diameters from Φ0.6mm (≈0.024") to Φ80mm (≈3.15"), and in lengths of 1M (≈3.3 ft), 3M (≈9.8 ft), 5M (≈16.4 ft), 10M (≈32.8 ft), and 25M (≈82 ft). The 2:1 shrink ratio means each tube shrinks to approximately half its listed diameter when heat is applied, creating a firm, insulating sleeve around your wire or connector. Material is polyolefin, which is flexible, flame-retardant, and resistant to moisture and mild chemicals.

Typical use cases include automotive wire harness repair and heat shrink wire connectors, DIY electronics projects requiring color-coded wire insulation sleeving, and cable management in control panels, marine wiring, and outdoor electrical installations where a clean, professional finish is required.

🔵 Compatibility: Fits wire gauges from AWG 28 (small signal wires) to large cable bundles up to Φ80mm. Select the unshrunk diameter that is approximately 20–30% larger than your wire or bundle OD. Confirm your size using the variant selector above before ordering.
⚠️ Note: Diameter listed is the unshrunk inner diameter. After applying heat, the tubing shrinks to approximately 50% of the listed size. If you are unsure of your required size, please contact us to confirm before purchasing.

✅ Key Features of These Blue 2:1 Heat Shrink Tubes

  • 🔵Vivid Blue Color Coding — Makes circuit identification straightforward in multi-wire installations, automotive harnesses, and control panels where color-coded wire insulation sleeving is essential.
  • 📐Wide Diameter Range (Φ0.6mm–Φ80mm) — Covers everything from fine signal wires to large cable bundles, so you can source all your heat shrink tubing needs from a single listing.
  • 📏Flexible Length Options (1M–25M) — Order exactly what your project requires, from a quick 1M repair length to a 25M workshop roll for production or bulk wiring jobs.
  • 🔥2:1 Shrink Ratio — Shrinks to approximately half its unshrunk diameter, forming a tight, uniform sleeve that resists pull-off and provides consistent insulation coverage along the full length.
  • 🛡️Polyolefin Construction — Flame-retardant, flexible, and resistant to moisture, mild chemicals, and abrasion — suitable for automotive, marine, and general electrical heat shrink wire wrap applications.
  • ✂️Easy to Cut and Apply — Cuts cleanly with scissors or a utility knife; shrinks evenly with a standard heat gun, making it accessible for both professional electricians and DIY builders.

📐 Technical Specifications — Blue 2:1 Heat Shrink Tubing

Material Polyolefin (flame-retardant)
Color Blue
Shrink Ratio 2:1
Unshrunk Inner Diameter Φ0.6mm–Φ80mm (see variant options)
Shrunk Inner Diameter Approximately 50% of unshrunk diameter
Available Lengths 1M / 3M / 5M / 10M / 25M
Activation Temperature Typically ~90°C (194°F)
Full Shrink Temperature Typically ~120°C (248°F)
Operating Temperature Range Generally -55°C to +125°C (contact us to confirm)
Flame Retardancy See variant options / Contact us to confirm standard
Wall Thickness (shrunk) See variant options
Application Method Heat gun (recommended); avoid open flame
Typical Use Wire insulation, cable bundling, connector protection, automotive wiring

❓ Frequently Asked Questions

How do I choose the right diameter for my wires?

Measure the outer diameter of the wire or bundle you need to cover, then select a heat shrink size that is typically 20–30% larger than that measurement before shrinking. For example, if your wire bundle is 4mm across, a Φ5mm or Φ6mm tube (unshrunk) will generally provide a snug, secure fit after applying heat. The 2:1 shrink ratio means the tubing will shrink to approximately half its listed diameter.

What does 2:1 shrink ratio mean?

A 2:1 shrink ratio means the tubing will shrink to approximately half its original (unshrunk) inner diameter when heat is applied. For example, a Φ10mm tube will shrink down to roughly Φ5mm. This ratio is the most common for general-purpose wire insulation and bundling applications.

What temperature is needed to shrink this tubing?

Most standard 2:1 polyolefin heat shrink tubing typically activates at around 90°C (194°F) and fully shrinks at approximately 120°C (248°F). A heat gun set to low or medium is generally sufficient. Avoid using an open flame directly, as it can scorch or unevenly shrink the tubing.

Is this heat shrink tubing suitable for outdoor use?

Standard polyolefin heat shrink tubing generally provides good resistance to moisture, UV exposure, and mild chemicals, making it suitable for many outdoor applications. However, for prolonged submersion or extreme outdoor environments, an adhesive-lined (3:1 or 4:1) variant is typically recommended for a fully waterproof seal.

What wire gauges and connector types is this compatible with?

This tubing is compatible with a wide range of wire gauges and connector types. The Φ0.6mm–Φ5mm sizes are generally suited for small gauge wires (AWG 28–18), while Φ6mm–Φ25mm covers mid-range wiring and connectors (AWG 16–6). Larger sizes (Φ28mm–Φ80mm) are typically used for cable bundles, conduit ends, and industrial connectors. Always verify the unshrunk diameter against your component before ordering.

How much length do I need for my project?

For single wire repairs or small projects, 1M is generally sufficient. For automotive wiring harnesses or panel builds, 3M–5M is a practical choice. Workshop or production use typically calls for 10M or 25M rolls to minimize waste and cost per meter. We offer lengths from 1M to 25M so you can order exactly what your project requires.

Can I use this tubing for automotive wiring?

Yes. Heat shrink tubing is widely used in automotive wiring for insulating splices, protecting terminals, and bundling wire harnesses. The blue color also makes it easy to identify specific circuits in multi-wire installations. Ensure you select a diameter that fits snugly over your connector or splice before shrinking.

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

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