4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors
4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors
4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors
4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors
4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors
4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors
4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors
4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors
4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors
4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors
4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors
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4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors

4mm Heat Shrink Tubing 2:1 Ratio – Wire Sleeving Wrap, 7 Colors

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

4mm Heat Shrink Tubing — Reliable Wire Insulation for Every Project

Whether you're rewiring a vehicle, tidying up a home electrical panel, or protecting splices on a marine build, loose or exposed wire ends are a constant frustration. This 4mm heat shrink tubing gives electricians, automotive technicians, and serious DIYers a clean, durable way to insulate and bundle wires without tape that unravels or connectors that corrode.

Each order is cut to your chosen length — from a single 1M (≈3.3 ft) strip up to a full 200M (≈656 ft) or 400M (≈1,312 ft) roll — in your choice of seven colors: White, Red, Green, Blue, Transparent, Yellow, and Black. The tubing is made from polyolefin with a 2:1 shrink ratio, meaning it shrinks from 4mm down to approximately 2mm when heat is applied, forming a tight, uniform sleeve. Lengths are available in 1M, 5M, 10M, 20M, 30M, 50M, 100M, 200M, and 400M options.

Ideal for automotive wiring harness repair, electrical panel wire management, RC hobby builds, marine cable protection, and DIY home electrical projects — this color-coded heat shrink tubing makes circuit identification and professional-looking wire dressing straightforward.

ℹ️ Compatibility: Fits wires and connectors up to approximately 3.5mm in diameter before shrinking. Generally compatible with AWG 10–18 wire gauges. Shrinks with a standard heat gun at approximately 90–120°C (194–248°F). Not recommended as a substitute for adhesive-lined tubing in fully submerged applications.

✅ Key Features of These 4mm Heat Shrink Tubes

  • 🔥2:1 Shrink Ratio — Shrinks from 4mm to approximately 2mm, creating a snug, uniform sleeve that conforms tightly to wire insulation and connector bodies for secure coverage.
  • 🎨7 Color Options — Available in White, Red, Green, Blue, Transparent, Yellow, and Black, making color-coded wire identification easy in automotive, marine, and panel wiring applications.
  • 📏Flexible Length Selection — Order exactly what you need, from a 1M (≈3.3 ft) sample strip to a full 400M (≈1,312 ft) bulk roll, reducing waste on small jobs and cutting cost on large runs.
  • ⚡Polyolefin Construction — Made from polyolefin material, which is widely used in electrical insulation for its resistance to moisture, chemicals, and abrasion in standard indoor and protected outdoor environments.
  • ✂️Easy to Cut and Apply — Cuts cleanly with standard scissors or a utility knife; slides over wire ends before termination or over connectors for a finished, professional look on heat shrink wire repair jobs.
  • 🏭Ships from US Warehouse — Stocked and fulfilled domestically for faster delivery, so your wiring project doesn't wait weeks for an overseas shipment.

📐 Technical Specifications — 4mm Polyolefin Heat Shrink Tubing

Product Type Heat Shrink Tubing
Nominal Diameter (Before Shrink) 4mm (≈5/32")
Shrink Ratio 2:1
Recovered Diameter (After Shrink) Approximately 2mm (≈5/64")
Material Polyolefin
Available Colors White, Red, Green, Blue, Transparent, Yellow, Black
Available Lengths 1M, 5M, 10M, 20M, 30M, 50M, 100M, 200M (roll), 400M (roll)
Shrink Temperature Typically 90–120°C (194–248°F)
Compatible Wire Gauge Generally AWG 10–18 (confirm by pre-shrink OD ≤ 3.5mm)
Wall Thickness (Before Shrink) See variant options
Voltage Rating Contact us to confirm
Operating Temperature Range Contact us to confirm
Compliance Contact us to confirm
⚠️ Note: Wall thickness, voltage rating, and operating temperature range vary by color batch. If your application requires certified specifications, please contact us before ordering.

❓ Frequently Asked Questions

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

Measure the total length of wire or splice you need to cover, then add at least 10–15% extra for overlap and trimming. For example, 10M (≈32.8 ft) is typically enough for a mid-size automotive wiring harness. If you work on large projects regularly, the 50M or 200M roll offers better value per meter.

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 4mm tubing will shrink down to approximately 2mm, creating a snug, insulating sleeve around your wire or connector.

Can this heat shrink tubing be used outdoors?

This tubing is generally suitable for protected outdoor use — for example, under a hood or inside a weatherproof enclosure. For fully exposed, long-term outdoor or marine applications, we recommend confirming UV and moisture resistance with us before ordering, as environmental conditions vary.

What wire sizes does 4mm heat shrink tubing fit?

Before shrinking, 4mm tubing typically fits wires and connectors up to approximately 3.5mm in outer diameter. After shrinking (2:1 ratio), it conforms tightly to items around 2mm in diameter. It is generally compatible with wire gauges in the AWG 10–18 range, though actual fit depends on insulation thickness — always measure your wire OD before ordering.

What temperature is needed to shrink this tubing?

Standard 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; move it evenly along the tubing to avoid scorching. Avoid open flames, which can cause uneven shrinkage or damage the sleeve.

Is this tubing RoHS compliant and safe for electrical use?

This heat shrink tubing is made from polyolefin material, which is generally RoHS-compliant and widely used in electrical insulation applications. For projects requiring certified compliance documentation, please contact us to confirm before placing your order.

Can I buy a custom length, or only the listed options?

We offer a range of pre-cut lengths from 1M up to full rolls (200M or 400M depending on color). If you need a specific quantity not listed, contact us and we will do our best to accommodate your order.

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

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