Heat Shrink Tubing 2:1 Ratio — φ5.5mm to φ10mm, 7 Colors, 1m–50m

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Heat Shrink Tubing 2:1 Ratio — φ5.5mm to φ10mm, 7 Colors, 1m–50m

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Size: φ5.5mm

Color: Black

Length: 1m

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$1.89 USD

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

Loose wire splices, exposed terminals, and unprotected cable ends are a frustration for any DIYer, hobbyist, or professional electrician. Whether you are repairing automotive wiring, building a custom electronics project, or tidying up a home electrical panel, having the right heat shrink tubing on hand makes the job cleaner, safer, and more durable.

This heat shrink tubing is made from flexible polyolefin with a 2:1 shrink ratio, available in seven diameters from φ5.5mm to φ10mm (≈0.22" to 0.39") and seven colors — Black, White, Red, Green, Yellow, Blue, and Transparent. Each listing is sold by the meter, with length options of 1m (≈3.3 ft), 5m (≈16.4 ft), 10m (≈32.8 ft), 20m (≈65.6 ft), and 50m (≈164 ft) to suit both one-off repairs and bulk workshop stock.

Typical applications include wire splicing and connector insulation for automotive wiring harnesses, strain relief on USB and power cables, color-coded cable identification in control panels, and protecting solder joints in RC vehicles, marine electronics, and home DIY electrical repairs.

🔌 Compatibility: Fits standard wire gauges and connectors within the φ5.5mm–φ10mm pre-shrink range. Shrinks to approximately half the listed diameter. Suitable for use with a heat gun, soldering iron tip, or controlled flame. Not recommended as a replacement for adhesive-lined waterproof tubing in fully submerged applications.

✅ Key Features of These Heat Shrink Tubes

🔥2:1 Shrink Ratio — Shrinks to half its original inner diameter when heat is applied, creating a snug, uniform fit around wires, connectors, and terminals without gaps or loose ends.
🎨7 Color Options — Available in Black, White, Red, Green, Yellow, Blue, and Transparent, making color-coded cable identification straightforward in automotive, marine, and panel wiring applications.
📏Wide Diameter Range — Seven sizes from φ5.5mm to φ10mm cover a broad range of wire gauges and connector types, from thin signal wires to heavier power cables.
🧪Polyolefin Construction — Flame-retardant, RoHS-compliant polyolefin material resists oils, solvents, and moisture, maintaining flexibility after shrinking for long-term protection in demanding environments.
📦Flexible Length Options — Choose from 1m to 50m rolls to match your project scale, whether it is a single wire repair or stocking a professional workshop with heat shrink sleeving.
⚡Electrical Insulation — Provides reliable dielectric insulation over solder joints, crimp connectors, and bare wire ends, reducing the risk of short circuits in automotive, hobby, and home electrical wiring projects.

📐 Technical Specifications — Heat Shrink Tubing

Product Type	Polyolefin Heat Shrink Tubing
Shrink Ratio	2:1
Available Diameters (Pre-Shrink)	φ5.5mm (≈0.22"), φ6mm (≈0.24"), φ6.5mm (≈0.26"), φ7mm (≈0.28"), φ8mm (≈0.31"), φ9mm (≈0.35"), φ10mm (≈0.39")
Approximate Post-Shrink Diameter	Typically ~50% of pre-shrink diameter (e.g., φ10mm shrinks to ≈φ5mm)
Available Colors	Black, White, Red, Green, Yellow, Blue, Transparent
Available Lengths	1m (≈3.3 ft), 5m (≈16.4 ft), 10m (≈32.8 ft), 20m (≈65.6 ft), 50m (≈164 ft)
Material	Polyolefin (flame-retardant)
Activation Temperature	Typically 90°C–120°C (194°F–248°F)
RoHS Compliance	See variant options
Recommended Tool	Heat gun (low to medium setting)
Typical Applications	Wire insulation, cable bundling, connector protection, strain relief, color coding
Waterproofing	Moisture-resistant; not fully waterproof (no adhesive lining)

⚠️ Note: This is a standard (non-adhesive-lined) heat shrink tubing. For fully waterproof or marine-grade sealing, an adhesive-lined dual-wall variant is recommended. If you need to confirm suitability for a specific wire gauge or connector, please contact us before ordering.

❓ Frequently Asked Questions

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

Select a pre-shrink inner diameter that is at least 10–20% larger than the outer diameter of the wire or connector you need to cover. With a 2:1 shrink ratio, the tubing will shrink to approximately half its original diameter. For example, φ8mm tubing will shrink down to roughly 4mm (≈0.16"). If you are unsure, size up — it is easier to use a slightly larger tube than one that is too tight to slide over the connector.

What temperature is needed to shrink this tubing?

Polyolefin heat shrink tubing generally activates at temperatures between 90°C and 120°C (194°F–248°F). A heat gun set to low or medium is the recommended tool. A lighter or open flame can work in a pinch but may scorch the tubing or cause uneven shrinkage. Always move the heat source continuously to avoid hot spots.

Can this heat shrink tubing be used outdoors?

Standard polyolefin heat shrink tubing provides good resistance to moisture and UV exposure for general outdoor use. For prolonged direct sunlight or harsh marine environments, a dual-wall adhesive-lined variant is typically recommended for a fully waterproof seal. Contact us to confirm suitability for your specific application.

What is the shrink ratio and what does 2:1 mean?

A 2:1 shrink ratio means the tubing shrinks to half its original inner diameter when heat is applied. For example, φ10mm tubing will shrink to approximately φ5mm (≈0.20"). This ratio is the most common for general-purpose wire insulation and cable bundling tasks.

Is this tubing compatible with automotive wiring?

Yes, polyolefin heat shrink tubing is generally compatible with automotive wiring harnesses, trailer connectors, and battery terminals. It provides electrical insulation and protects against abrasion and vibration. For high-heat engine-bay applications, verify the operating temperature range of the specific variant before use.

How do I choose between the available lengths (1m, 5m, 10m, 20m, 50m)?

For single repairs or small projects, the 1m (≈3.3 ft) length is typically sufficient. For workshop stock or recurring electrical work, the 5m or 10m rolls offer better value. The 20m and 50m rolls are suited for professional installers, production runs, or anyone who regularly works with wiring harnesses and needs heat shrink sleeving in bulk.

What materials is this heat shrink tubing made from?

This tubing is made from polyolefin, a flexible, flame-retardant thermoplastic material widely used in electrical insulation. Polyolefin is RoHS-compliant, resistant to oils and solvents, and maintains flexibility after shrinking — making it suitable for a wide range of DIY and professional cable management applications.

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

Heat Shrink Tubing 2:1 Ratio — φ5.5mm to φ10mm, 7 Colors, 1m–50m

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Beschreibung

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

✅ Key Features of These Heat Shrink Tubes

📐 Technical Specifications — Heat Shrink Tubing

❓ Frequently Asked Questions

Heat Shrink Tubing 2:1 Ratio — φ5.5mm to φ10mm, 7 Colors, 1m–50m

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