28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation
28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation
28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation
28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation
28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation
28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation
28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation
28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation
28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation
28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation
28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation
28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation
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28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation

28mm Heat Shrink Tubing 2:1 Ratio – Electrical Cable Sleeving & Wire Insulation

HomeDIYer
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By HomeDIYer®

Price:
$9.04 USD
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In stock (500 units), ready to be shipped

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Description

28mm Heat Shrink Tubing 2:1 — Reliable Electrical Insulation for Cables, Splices & Connectors

Exposed wire splices, fraying cable ends, and unprotected connectors are a constant headache for electricians, automotive technicians, and serious DIYers. One failed insulation point can mean a short circuit, a fire hazard, or hours of troubleshooting. This 28mm heat shrink tubing gives you a fast, clean, and durable solution — just slide it on, apply heat, and get a tight, professional-grade seal every time.

Each order includes your chosen length of 28mm (≈1.1") inner diameter polyolefin heat shrink tubing with a 2:1 shrink ratio, available in lengths from 1 Meter (≈39.4") up to 15 Meters (≈49.2 ft). Seven color options — Black, White, Red, Green, Yellow, Blue, and Transparent — make color-coding and circuit identification straightforward. The tubing shrinks down to approximately 14mm (≈0.55") upon heat application, conforming tightly to cables, connectors, and bundled wire harnesses.

Typical applications include automotive wiring harness repair, marine electrical connections, home electrical panel work, and workshop tool cord management — anywhere you need dependable heat shrink wire insulation that stays put. The color variety also makes it ideal for color-coded cable labeling in control panels and audio/video installations.

ℹ️ Compatibility Note: This tubing fits cables and connectors with an outer diameter up to approximately 26mm. Verify your cable bundle diameter before ordering. For adhesive-lined or higher shrink-ratio variants, contact us.

✅ Key Features of These 28mm Heat Shrink Tubes

  • 🔥2:1 Shrink Ratio — Shrinks from 28mm down to approximately 14mm, conforming snugly around cable bundles, wire splices, and connectors for a tight, gap-free seal.
  • 🛡️Flame-Retardant Polyolefin Material — Made from polyolefin, which is generally self-extinguishing and meets common flame-retardant standards, reducing risk in electrical installations.
  • 🎨7 Color Options for Easy Identification — Black, White, Red, Green, Yellow, Blue, and Transparent allow color-coded cable labeling in automotive, marine, and panel wiring applications.
  • 📏Flexible Length Selection — Available in 1m, 3m, 5m, 8m, 10m, and 15m cuts so you can order exactly what your project needs — from a single repair to a full wiring harness job.
  • ⚡Electrical Insulation & Moisture Resistance — Provides a protective barrier against moisture, dust, and abrasion, making it suitable for both indoor electrical work and general outdoor cable protection.
  • ✂️Easy to Cut and Apply — Cuts cleanly with standard scissors or a utility knife; shrinks evenly with a heat gun at typically 120°C (248°F), with no adhesives or special tools required.

📐 Technical Specifications — 28mm 2:1 Heat Shrink Tubing

Product Type Heat Shrink Tubing / Electrical Sleeving
Inner Diameter (Before Shrink) 28mm (≈1.10")
Inner Diameter (After Shrink) Approximately 14mm (≈0.55")
Shrink Ratio 2:1
Material Polyolefin
Available Colors Black, White, Red, Green, Yellow, Blue, Transparent
Available Lengths 1m (≈39.4"), 3m (≈9.8 ft), 5m (≈16.4 ft), 8m (≈26.2 ft), 10m (≈32.8 ft), 15m (≈49.2 ft)
Shrink Temperature Typically 120°C (248°F) full shrink; begins at approx. 70–90°C (158–194°F)
Flame Retardancy Generally flame-retardant (polyolefin); contact us to confirm specific certifications
Wall Thickness (After Shrink) See variant options
Operating Temperature Range Typically -55°C to +125°C (-67°F to +257°F)
Application Tool Heat gun recommended
Certifications Contact us to confirm
⚠️ Spec Confirmation: Wall thickness and specific certifications (UL, RoHS, etc.) vary by production batch. Contact us before ordering for safety-critical or compliance-sensitive applications.

❓ Frequently Asked Questions

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

Measure the total cable run you need to cover and add 10–15% extra for overlap and trimming. For example, a 1-meter (≈39.4") length suits short wire repairs, while 5–15 meter rolls are better for wiring harnesses or bulk projects. Choose the length that minimizes waste for your specific job.

What does 2:1 shrink ratio mean?

A 2:1 shrink ratio means the tubing will shrink to approximately half its original diameter when heat is applied. This 28mm tubing will typically shrink down to around 14mm (≈0.55"), conforming snugly around cables, connectors, or splices for a secure, insulated finish.

What is the minimum shrink temperature?

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 for even, controlled shrinkage. Avoid open flames, which can cause uneven shrinking or scorching.

Is this heat shrink tubing suitable for outdoor use?

Standard polyolefin heat shrink tubing provides good UV and moisture resistance for general outdoor applications such as garden lighting wiring or automotive exterior connections. For prolonged submersion or harsh marine environments, an adhesive-lined variant is generally recommended. Contact us to confirm suitability for your specific environment.

What wire or cable diameter fits inside 28mm heat shrink tubing?

The 28mm inner diameter (before shrinking) accommodates cable bundles or connectors up to approximately 26mm in outer diameter. After shrinking, it typically closes down to around 14mm. Always measure your cable bundle's outer diameter before selecting tubing size to ensure a proper fit.

Is this tubing flame-retardant?

Polyolefin heat shrink tubing is generally manufactured to meet flame-retardant standards (typically UL 224 or equivalent) and is self-extinguishing in most cases. Contact us to confirm specific certification details for your application, especially for safety-critical or compliance-sensitive installations.

Can I use a lighter instead of a heat gun?

While a lighter can technically shrink the tubing, it is not recommended — open flames produce uneven heat and can scorch or melt the tubing. A heat gun or embossing tool provides consistent, controlled heat for a clean, professional result. Most entry-level heat guns suitable for this task are available for under $20.

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

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