3.5mm Heat Shrink Tubing 2:1 Ratio — Electrical Wire Sleeving, 7 Colors, 1m–100m
3.5mm Heat Shrink Tubing 2:1 Ratio — Electrical Wire Sleeving, 7 Colors, 1m–100m
3.5mm Heat Shrink Tubing 2:1 Ratio — Electrical Wire Sleeving, 7 Colors, 1m–100m
3.5mm Heat Shrink Tubing 2:1 Ratio — Electrical Wire Sleeving, 7 Colors, 1m–100m
3.5mm Heat Shrink Tubing 2:1 Ratio — Electrical Wire Sleeving, 7 Colors, 1m–100m
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3.5mm Heat Shrink Tubing 2:1 Ratio — Electrical Wire Sleeving, 7 Colors, 1m–100m3.5mm Heat Shrink Tubing 2:1 Ratio — Electrical Wire Sleeving, 7 Colors, 1m–100m3.5mm Heat Shrink Tubing 2:1 Ratio — Electrical Wire Sleeving, 7 Colors, 1m–100m3.5mm Heat Shrink Tubing 2:1 Ratio — Electrical Wire Sleeving, 7 Colors, 1m–100m3.5mm Heat Shrink Tubing 2:1 Ratio — Electrical Wire Sleeving, 7 Colors, 1m–100m

3.5mm Heat Shrink Tubing 2:1 Ratio — Electrical Wire Sleeving, 7 Colors, 1m–100m

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Beschreibung

 

3.5mm Heat Shrink Tubing 2:1 — Reliable Electrical Wire Insulation for Every Project

Whether you're repairing a frayed wire under the dashboard, tidying up a home automation panel, or color-coding a marine wiring harness, exposed conductors are a safety hazard and a headache. DIYers, electricians, and hobbyists alike need a fast, clean solution that stays put — and that's exactly what this 3.5mm heat shrink tubing delivers.

Each roll is made from flexible polyolefin with a 2:1 shrink ratio, meaning the 3.5mm (≈0.138") inner diameter recovers to approximately 1.75mm (≈0.069") when heat is applied. Available in seven colors — Black, White, Red, Green, Yellow, Blue, and Transparent — and in lengths from 1m (≈3.3 ft) up to 100m (≈328 ft), so you can grab exactly what your job requires.

Ideal for automotive wire repair and color-coded wiring harnesses, DIY electronics and PCB lead insulation, and home electrical projects where neat, professional-looking wire management matters. The transparent option is especially popular for applications where you need to see the wire or label underneath.

🔌 Compatibility Note: This tubing fits wire and terminal outer diameters up to 3.5mm before shrinking. It is compatible with standard polyolefin heat shrink applications and works with any heat gun, soldering station hot-air nozzle, or similar tool. Not recommended for high-voltage (HV) or adhesive-lined applications without confirmation.

✅ Key Features of These 3.5mm Heat Shrink Tubes

  • 🔥2:1 Shrink Ratio — Recovers from 3.5mm down to approximately 1.75mm, creating a snug, uniform fit around wires, terminals, and connectors without gaps or loose ends.
  • 🎨7 Color Options — Black, White, Red, Green, Yellow, Blue, and Transparent let you color-code circuits, match existing wiring conventions, or keep connections visible for inspection.
  • 📏Flexible Length Selection — Choose from 1m to 100m rolls so you only buy what you need — whether it's a single repair or a bulk wiring harness job.
  • 🛡️Polyolefin Construction — Offers solid resistance to moisture, mild chemicals, and abrasion, making it suitable for automotive, marine, and indoor electrical wire sleeving applications.
  • ✂️Easy to Cut and Apply — Cuts cleanly with standard scissors or a utility knife; slides over wire easily before shrinking and conforms tightly with a heat gun in seconds.
  • ⚡Electrical Insulation Performance — Provides a reliable insulating layer over splices, solder joints, and bare conductors, helping prevent short circuits and protecting against accidental contact.

📐 Technical Specifications — 3.5mm Heat Shrink Tubing

Product Type Heat Shrink Tubing / Electrical Wire Sleeving
Material Polyolefin
Shrink Ratio 2:1
Inner Diameter (Before Shrink) 3.5mm (≈0.138")
Inner Diameter (After Shrink) Approximately 1.75mm (≈0.069")
Available Colors Black, White, Red, Green, Yellow, Blue, Transparent
Available Lengths 1m, 2m, 5m, 10m, 20m, 50m, 100m
Activation Temperature Typically ~90°C (194°F)
Full Recovery Temperature Typically ~120°C (248°F)
Recommended Tool Heat gun or hot-air station
Adhesive Lined No (standard wall)
Suitable Wire Gauge See variant options (generally 18–22 AWG range)
Compliance Contact us to confirm
⚠️ Heads up: If you're unsure whether 3.5mm is the right size for your wire or terminal, measure the outer diameter of the conductor first. The tubing should slide over easily with a little room to spare before heat is applied.

❓ Frequently Asked Questions

What length of heat shrink tubing do I need for my project?

For single wire repairs or small connectors, 1m or 2m is generally sufficient. For wiring harnesses, automotive projects, or bulk work, 10m–100m rolls offer better value. As a rule of thumb, measure the total run of exposed wire and add 20% for trimming and overlap.

What does 2:1 shrink ratio mean?

A 2:1 ratio means the tubing shrinks to half its original diameter when heat is applied. This 3.5mm tubing will typically shrink down to approximately 1.75mm, making it suitable for wires and terminals in that recovered size range.

What wire gauge does 3.5mm heat shrink tubing fit?

3.5mm inner diameter tubing generally fits wire gauges in the range of 18–22 AWG before shrinking. Always verify the outer diameter of your wire or connector before selecting a size to ensure a proper fit.

Can this heat shrink tubing be used outdoors?

This tubing is made from polyolefin, which generally offers good resistance to moisture, UV exposure, and mild chemicals. For harsh outdoor or marine environments, we recommend confirming suitability with our team before use.

What temperature is needed to shrink this tubing?

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

Is this tubing RoHS compliant and safe for electrical use?

This heat shrink tubing is generally manufactured to meet RoHS standards and is suitable for standard electrical insulation applications. For safety-critical or high-voltage installations, please contact us to confirm compliance documentation.

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, bubble, or weaken the tubing. A heat gun or even a hair dryer on high heat will give cleaner, more consistent results.

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

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