20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation
20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation
20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation
20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation
20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation
20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation
20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation
20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation
20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation
20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation
20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation
20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation
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20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation

20mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation

HomeDIYer
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By HomeDIYer®

Price:
$2.48 USD
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In stock (500 units), ready to be shipped

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Description

20mm Heat Shrink Tubing 2:1 — Reliable Electrical Insulation for Wiring & Cable Repairs

Whether you're rewiring a vehicle, bundling cables in a control panel, or making clean repairs on appliance wiring, loose or exposed conductors are a safety hazard you can't ignore. DIYers, electricians, and hobbyists alike need a fast, durable way to insulate and protect their work — and that's exactly where 20mm heat shrink tubing delivers.

Each order includes your chosen length of 20mm (≈13/16") diameter, 2:1 shrink ratio polyolefin tubing, available in 1 Meter (≈3.3'), 3 Meter (≈9.8'), 5 Meter (≈16.4'), 10 Meter (≈32.8'), 15 Meter (≈49.2'), and 20 Meter (≈65.6') cuts. Color options include Black, White, Red, Green, Yellow, Blue, and Transparent — making color-coded wiring organization straightforward. Upon applying heat, the tubing shrinks to approximately 10mm, forming a tight, protective sleeve around cables and connectors.

This electrical cable insulation sleeving is well-suited for automotive wiring harness repairs, marine cable protection, workshop tool cord management, and DIY electronics projects where a clean, professional finish matters. The transparent option is especially useful when you need to inspect connections without removing the sleeve.

🔌 Compatibility: Fits cables and wire bundles with an outer diameter typically between 10mm–18mm (≈3/8"–11/16"). Verify your cable OD before selecting. Shrinks with a standard heat gun at approximately 90–120°C (194–248°F).

✅ Key Features of These 20mm Heat Shrink Tubing Sleeves

  • 🔥2:1 Shrink Ratio — Shrinks from 20mm down to approximately 10mm, creating a snug, form-fitting sleeve that locks onto cables and connectors without gaps.
  • 🎨7 Color Options — Black, White, Red, Green, Yellow, Blue, and Transparent allow color-coded wire identification and organization across complex wiring harnesses.
  • 📏6 Length Choices — From 1 Meter for quick repairs to 20 Meter rolls for bulk electrical sleeving projects, so you only buy what you need.
  • 🛡️Polyolefin Construction — Flame-retardant polyolefin material generally provides solid electrical insulation, moisture resistance, and mechanical protection for indoor wiring and light outdoor use.
  • 👁️Transparent Option Available — The clear variant lets you visually inspect solder joints and connections without cutting or removing the sleeve — ideal for quality-control checks.
  • ✂️Easy to Cut & Apply — Cuts cleanly with standard scissors or a utility knife; no special tools required beyond a heat gun for shrinking. Works well for automotive, marine, and DIY electronics cable insulation.

📐 Technical Specifications — 20mm Heat Shrink Tubing

Tubing Type Heat Shrink Sleeving
Shrink Ratio 2:1
Supplied Diameter 20mm (≈13/16")
Recovered Diameter Approximately 10mm (≈3/8") after full shrink
Fits Cable OD Typically 10mm–18mm (≈3/8"–11/16")
Material Polyolefin (flame-retardant)
Available Colors Black, White, Red, Green, Yellow, Blue, Transparent
Available Lengths 1m (≈3.3'), 3m (≈9.8'), 5m (≈16.4'), 10m (≈32.8'), 15m (≈49.2'), 20m (≈65.6')
Activation Temperature Typically ~90°C (194°F); full shrink at ~120°C (248°F)
Wall Thickness (recovered) See variant options
Voltage Rating Contact us to confirm
Compliance Contact us to confirm
Recommended Tool Heat gun
⚠️ Note: Wall thickness and voltage rating vary by production batch. If your application has specific electrical rating requirements, please contact us before ordering to confirm specifications.

❓ 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 3-meter (≈9.8') run typically works well for most automotive or appliance wiring jobs. Longer lengths like 10m or 20m are ideal for bulk projects or workshop stock.

What does 2:1 shrink ratio mean?

A 2:1 ratio means the tubing shrinks to approximately half its original diameter when heat is applied. This 20mm tubing will generally shrink down to around 10mm, providing a snug, secure fit over cables and connectors in that size range.

What wire or cable diameter does 20mm heat shrink fit?

This tubing is designed for cables and bundles with an outer diameter typically between 10mm and 18mm (≈3/8" to 11/16"). Always measure your cable's outer diameter before ordering to ensure a proper fit.

Can this heat shrink tubing be used outdoors?

Standard polyolefin heat shrink tubing generally provides good moisture resistance for light outdoor use. However, for prolonged UV exposure or submersion, we recommend a dual-wall adhesive-lined variant. Contact us to confirm suitability for your specific outdoor application.

What temperature is needed to shrink this tubing?

Polyolefin heat shrink tubing typically activates at around 90°C (194°F) and fully shrinks at approximately 120°C (248°F). A heat gun is the recommended tool; avoid open flames as they can scorch or unevenly shrink the material.

Is this tubing safe for electrical use and RoHS compliant?

This heat shrink tubing is generally manufactured from flame-retardant polyolefin material. For specific compliance certifications (RoHS, UL, etc.) relevant to your project, please contact us to confirm before ordering.

Can I use a lighter or hair dryer instead of a heat gun?

A hair dryer typically does not reach the temperatures needed for reliable shrinking. A heat gun is strongly recommended. In a pinch, a lighter can work on small sections, but it risks scorching — use it carefully and keep the flame moving.

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

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