45mm 2:1 Heat Shrink Tubing – Electrical Insulation Sleeve for Cable & Wire

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45mm 2:1 Heat Shrink Tubing – Electrical Insulation Sleeve for Cable & Wire

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Color: Black

Length: 1 Meter

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45mm 2:1 Heat Shrink Tubing — Reliable Electrical Insulation for Large Cable Bundles

When you're dealing with exposed wire splices, frayed cable ends, or unprotected connector joints, a single weak point can mean a failed circuit, a short, or worse — a safety hazard. Electricians, automotive technicians, marine riggers, and serious DIYers all face the same challenge: finding heat shrink tubing that fits large-diameter cable bundles cleanly and holds up under real working conditions.

This 45mm 2:1 heat shrink tubing ships in your choice of seven colors — Black, White, Red, Green, Yellow, Blue, and Transparent — and in lengths from 1 Meter (≈39.4") up to 10 Meters (≈393.7"). The expanded inner diameter is 45mm (≈1.77"), shrinking down to approximately 22–23mm (≈7/8") upon heat application. The tubing is constructed from polyolefin, a material known for its flexibility, chemical resistance, and consistent shrink performance across a wide temperature range.

Typical use cases include protecting large wire harness bundles in automotive and RV builds, insulating cable splices in panel wiring and electrical enclosures, bundling and color-coding multi-conductor assemblies in industrial control cabinets, and providing abrasion protection on hose ends and hydraulic lines in workshop and garage environments.

🔌 Compatibility Note: This tubing has a 45mm expanded diameter with a 2:1 shrink ratio, suitable for cable bundles and connectors up to approximately 22mm in diameter. Verify your cable OD before ordering. Available in 7 colors and 7 length options.

✅ Key Features of These 45mm 2:1 Heat Shrink Tubing Sleeves

🔥Consistent 2:1 Shrink Ratio — Shrinks uniformly from 45mm down to approximately 22–23mm (≈7/8"), creating a tight, conforming fit around cable bundles, connectors, and hose ends without gaps or lifting edges.
🎨7-Color Selection for Circuit ID — Available in Black, White, Red, Green, Yellow, Blue, and Transparent, making it straightforward to color-code wire harnesses, identify circuits at a glance, and meet standard wiring color conventions.
📏Flexible Length Options — Choose from 1m (≈39.4"), 2m (≈78.7"), 3m (≈118.1"), 4m (≈157.5"), 5m (≈196.9"), 8m (≈314.9"), or 10m (≈393.7") to match your project scale and reduce waste on large cable insulation jobs.
🧪Polyolefin Construction — Made from polyolefin material that is flexible after shrinking, resistant to common chemicals and oils, and maintains its insulating properties across a broad operating temperature range — well-suited for automotive wiring harness protection and industrial use.
⚡Electrical Insulation Performance — Provides a protective insulating layer over wire splices, terminal connections, and cable ends, generally rated for up to 600V in standard polyolefin formulations — suitable for most residential, automotive, and light industrial electrical applications.
✂️Easy to Cut and Apply — Cuts cleanly with standard scissors or a utility knife, slides easily over cable ends before termination, and shrinks evenly with a heat gun — no special tools required beyond a basic heat source for fast, clean heat shrink wire sleeve installation.

📐 Technical Specifications — 45mm 2:1 Heat Shrink Tubing

Product Type	Heat Shrink Tubing / Electrical Insulation Sleeve
Expanded Inner Diameter	45mm (≈1.77")
Recovered Inner Diameter	Approximately 22–23mm (≈7/8") after full shrink
Shrink Ratio	2:1
Material	Polyolefin
Available Colors	Black, White, Red, Green, Yellow, Blue, Transparent
Available Lengths	1m, 2m, 3m, 4m, 5m, 8m, 10m
Activation Temperature	Typically ~90°C (194°F); full shrink at ~120°C (248°F)
Voltage Rating	Typically up to 600V (contact us to confirm for your application)
Wall Thickness (recovered)	See variant options
Application Method	Heat gun (recommended); avoid open flame
Typical Use	Wire harness bundling, cable splice insulation, connector protection, hose end abrasion protection
Ships From	US Warehouse

⚠️ Before You Order: Measure your cable bundle's outer diameter to confirm it falls below 22mm after shrinking. If your bundle OD is close to the limit, contact us to confirm fit.

❓ Frequently Asked Questions

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

Measure the total length of the wire or cable section you need to cover, then add at least 10–15% extra to account for shrinkage along the length axis. For example, if you need to cover 90cm (≈35.4"), order the 1 Meter option. For longer runs or multiple splices, the 5 Meter or 10 Meter rolls offer the best value per meter.

What shrink ratio does this tubing use, and what does 2:1 mean?

A 2:1 shrink ratio means the tubing will shrink to approximately half its original diameter when heat is applied. This 45mm tubing will typically shrink down to around 22–23mm (≈7/8"), creating a snug, secure fit around the underlying cable or connector body.

What temperature is needed to shrink this tubing?

Generally, polyolefin-based 2:1 heat shrink tubing 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 slowly and evenly along the tubing. Avoid open flames, as they can scorch or unevenly shrink the material.

Can this heat shrink tubing be used outdoors or in wet environments?

Standard polyolefin heat shrink tubing is generally moisture-resistant and suitable for light outdoor use and protected exterior installations. However, for fully waterproof applications — such as marine wiring, underground cable splices, or direct water immersion — we recommend using dual-wall adhesive-lined heat shrink tubing instead. Contact us to confirm suitability for your specific environment.

Is this tubing compatible with standard wire gauges and connectors?

At 45mm expanded diameter, this tubing is designed for larger cable bundles, conduit ends, hose protection, and multi-conductor assemblies. It is generally compatible with cable bundles and connectors up to approximately 22mm in outer diameter after shrinking. For smaller individual wires or thinner gauge applications, consider a smaller diameter size from our range.

How do I select the right color for my wiring project?

Color selection is typically used for circuit identification and organization. Common conventions include: Black for ground or general insulation, Red for positive/live wires, Blue for neutral, Green or yellow-green for earth/ground, White for neutral in residential wiring, and Transparent when you want to see the underlying wire markings or label. Yellow is often used for caution or secondary circuits.

What is the voltage rating of this heat shrink tubing?

Polyolefin 2:1 heat shrink tubing in this size range is typically rated for up to 600V, making it suitable for most residential, automotive, and light industrial electrical insulation applications. For high-voltage industrial applications exceeding this rating, please contact us to confirm compatibility before ordering.

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

45mm 2:1 Heat Shrink Tubing – Electrical Insulation Sleeve for Cable & Wire

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Beschreibung

45mm 2:1 Heat Shrink Tubing — Reliable Electrical Insulation for Large Cable Bundles

✅ Key Features of These 45mm 2:1 Heat Shrink Tubing Sleeves

📐 Technical Specifications — 45mm 2:1 Heat Shrink Tubing

❓ Frequently Asked Questions

45mm 2:1 Heat Shrink Tubing – Electrical Insulation Sleeve for Cable & Wire

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