50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve
50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve
50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve
50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve
50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve
50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve
50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve
50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve
50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve
50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve
50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve
50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve
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50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve

50mm Heat Shrink Tubing 2:1 Ratio – Flexible Electrical Wire Sleeve

HomeDIYer
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By HomeDIYer®

Price:
$5.43 USD
Stock:
In stock (500 units), ready to be shipped

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Description

50mm Heat Shrink Tubing 2:1 Ratio — Reliable Insulation for Large-Diameter Electrical Wires

Dealing with exposed splices, frayed cable ends, or unprotected wiring harnesses is a safety risk no DIYer or professional should ignore. Whether you're rewiring a vehicle, building a custom electrical panel, or tidying up a workshop cable run, having the right 50mm heat shrink tubing on hand makes the difference between a clean, protected finish and a potential short circuit.

Each order includes a continuous length of 2:1 ratio polyolefin heat shrink tubing with a pre-shrink inner diameter of 50mm (≈2"). Available in lengths of 1m (≈3.3 ft), 2m (≈6.6 ft), 5m (≈16.4 ft), and 10m (≈32.8 ft), and offered in 7 colors — Black, White, Red, Green, Yellow, Blue, and Transparent — so you can color-code circuits or match your project's aesthetic. The 2:1 shrink ratio means the tubing contracts to approximately 25mm (≈1") inner diameter upon heating.

This large-diameter heat shrink sleeve is ideal for automotive wiring harness protection, marine cable management, electrical panel wire bundling, and heavy-duty DIY electrical repairs. It's a go-to solution for anyone searching for a flexible wire insulation sleeve that handles thick cable bundles cleanly and securely.

🔌 Compatibility: Fits cable bundles and connectors up to approximately 48mm outer diameter. Suitable for automotive, marine, industrial, and general electrical wiring applications. Verify your cable OD before selecting a size.

✅ Key Features of These 50mm Heat Shrink Tubing Sleeves

  • 🔥2:1 Shrink Ratio — Shrinks from 50mm (≈2") down to approximately 25mm (≈1") inner diameter, creating a tight, conforming seal around large wire bundles and connectors.
  • 🛡️Polyolefin Construction — Made from flexible polyolefin material that typically resists moisture, oils, and mild UV exposure — well-suited for automotive wiring harness protection and covered outdoor use.
  • 🎨7 Color Options — Available in Black, White, Red, Green, Yellow, Blue, and Transparent for easy circuit identification, polarity marking, and color-coded cable management.
  • 📏4 Length Options — Choose from 1m, 2m, 5m, or 10m rolls to match your project scale, from a single splice repair to a full wiring harness build.
  • ⚡Electrical Insulation Sleeve — Provides a protective insulating layer over exposed conductors, solder joints, and terminal connections, reducing the risk of shorts and abrasion damage.
  • ✂️Easy to Cut and Apply — Cuts cleanly with standard scissors or a utility knife; shrinks evenly with a heat gun at typically 90–120°C (194–248°F) without requiring adhesives or clamps.

📐 Technical Specifications — 50mm 2:1 Heat Shrink Tubing

Product Type Heat Shrink Tubing / Wire Sleeve
Shrink Ratio 2:1
Pre-Shrink Inner Diameter 50mm (≈2")
Post-Shrink Inner Diameter Approximately 25mm (≈1")
Available Lengths 1m (≈3.3 ft), 2m (≈6.6 ft), 5m (≈16.4 ft), 10m (≈32.8 ft)
Available Colors Black, White, Red, Green, Yellow, Blue, Transparent
Material Polyolefin (typically)
Activation Temperature Typically ~90°C (194°F); full shrink at ~120°C (248°F)
Wall Thickness (post-shrink) See variant options
Voltage Rating Contact us to confirm
Application Automotive, marine, industrial, DIY electrical
Recommended Tool Heat gun (open flame not recommended)

❓ Frequently Asked Questions

What length of heat shrink tubing do I need?

Measure the section of wire or splice you need to cover, then add at least 10–15mm (≈1/2") of overlap on each end. For longer cable runs or harness builds, the 5m (≈16.4 ft) or 10m (≈32.8 ft) rolls offer the best value. When in doubt, size up — leftover tubing stores easily.

What does 2:1 shrink ratio mean?

A 2:1 ratio means the tubing shrinks to approximately half its original inner diameter when heat is applied. This 50mm tubing will typically shrink down to around 25mm (≈1"), providing a snug, secure fit over the covered component.

What wire or cable sizes does 50mm heat shrink tubing fit?

With a 50mm (≈2") inner diameter before shrinking, this tubing is generally suited for large cable bundles, conduit ends, thick automotive wiring harnesses, and connectors up to approximately 48mm in diameter. Always verify your cable's outer diameter before ordering.

Can this heat shrink tubing be used outdoors or in automotive applications?

This tubing is generally suitable for automotive wiring, engine bays, and covered outdoor installations. The polyolefin material typically offers resistance to moisture, oils, and UV exposure. For fully submerged or extreme-temperature environments, contact us to confirm suitability.

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 recommended for even, controlled shrinkage. Avoid open flames, which can scorch or unevenly shrink the tubing.

Does the color affect performance or insulation properties?

No — all color variants share the same material and electrical insulation properties. Color is purely for identification and organization. Many electricians and automotive technicians use color-coded tubing to distinguish circuits, polarity, or wire gauge groups at a glance.

Is this tubing compatible with standard electrical and automotive wiring standards?

This heat shrink tubing is generally compatible with common North American and international wiring practices. It is typically used alongside SAE and ISO wiring standards in automotive builds. For compliance with specific certifications (UL, RoHS, etc.), please contact us to confirm.

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

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