Heat Shrink Tubing 2:1 Ratio — φ11mm to φ45mm, 7 Colors, 1M & 5M

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Heat Shrink Tubing 2:1 Ratio — φ11mm to φ45mm, 7 Colors, 1M & 5M

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By HomeDIYer®

Colour: Black

Diameter: φ11mm

Length: 1Meter

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$4.18 USD

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In stock (500 units), ready to be shipped

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Heat Shrink Tubing 2:1 — Reliable Insulation from φ11mm to φ45mm

Loose wire ends, exposed splices, and unprotected connectors are a constant headache for electricians, automotive technicians, and DIY enthusiasts alike. Whether you're rewiring a vehicle, tidying up a home electrical panel, or building a custom electronics project, bare conductors invite shorts, corrosion, and safety hazards. This heat shrink tubing 2:1 ratio sleeve gives you a clean, professional-grade solution that locks in place with just a heat gun.

Each order covers a single tube in your chosen color and length — available in 1 Meter (≈39.4") or 5 Meter (≈196.9") rolls. Diameters range from φ11mm (≈0.43") up to φ45mm (≈1.77"), with a 2:1 shrink ratio that reduces the inner diameter by half upon heating. The tubing is made from flexible polyolefin material, available in seven colors: Black, White, Red, Green, Yellow, Blue, and Transparent.

Typical use cases include automotive wiring harness repair, marine cable protection, electrical wire insulation for home improvement projects, and color-coded wire organization in control panels. The transparent option is particularly popular for labeling wires without hiding identification markings — a long-tail search favorite among electronics hobbyists looking for clear heat shrink tubing for wire labeling.

🔌 Compatibility Note: This tubing is designed for standard round cables and connectors. Verify your cable's outer diameter before ordering — the pre-shrink inner diameter should be at least 20% larger than your cable OD for a secure fit after shrinking.

⚠️ Spec Confirmation: Wall thickness and exact shrink temperature may vary slightly by diameter. If your application requires certified electrical ratings or specific wall thickness values, please contact us to confirm before ordering.

✅ Key Features of These Heat Shrink Tubing Sleeves

🔥2:1 Shrink Ratio — Shrinks to half its original inner diameter when heated, creating a snug, uniform grip around wires, connectors, and cable bundles without adhesive mess.
📏Wide Size Range — Covers φ11mm through φ45mm (≈0.43" to ≈1.77"), making these electrical wire insulation sleeves suitable for everything from thin signal wires to large cable bundles.
🎨7 Color Options — Black, White, Red, Green, Yellow, Blue, and Transparent allow color-coded wire identification and organization in automotive, marine, and industrial wiring harness applications.
⚡Polyolefin Material — Flexible, flame-retardant polyolefin construction provides electrical insulation, moisture resistance, and protection against abrasion for long-term cable protection.
✂️Cut-to-Length Rolls — Available in 1M and 5M lengths so you can cut exactly what you need for each job, reducing waste on multi-wire heat shrink tubing projects.
🏠Broad Application Range — Suited for automotive wiring repair, home electrical DIY, marine cable sealing, RC hobby builds, and electronics prototyping — anywhere a reliable wire sleeve is needed.

📐 Technical Specifications — Heat Shrink Tubing 2:1 Polyolefin Sleeve

Material	Polyolefin (flame-retardant)
Shrink Ratio	2:1
Available Diameters (Pre-Shrink)	φ11mm, φ12mm, φ13mm, φ14mm, φ15mm, φ16mm, φ18mm, φ20mm, φ22mm, φ25mm, φ28mm, φ30mm, φ35mm, φ40mm, φ45mm
Available Lengths	1 Meter (≈39.4") / 5 Meter (≈196.9")
Available Colors	Black, White, Red, Green, Yellow, Blue, Transparent
Shrink Temperature	Typically 90°C–120°C (194°F–248°F)
Voltage Rating	Typically up to 600V (contact us to confirm for your application)
Wall Thickness (Post-Shrink)	See variant options
Operating Temperature Range	Generally -55°C to +125°C (-67°F to +257°F) — contact us to confirm
Application Method	Heat gun (recommended); avoid open flame
Country of Origin	Contact us to confirm

❓ Frequently Asked Questions

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

Measure the outer diameter of the wire or connector you need to cover. Choose a tubing size whose pre-shrink inner diameter is at least 20% larger than your cable's OD. For example, if your cable is 9mm in diameter, a φ11mm tube (≈0.43" pre-shrink) is generally a good starting point. After shrinking at 2:1 ratio, it will grip tightly around the cable.

What temperature is needed to shrink this tubing?

Standard polyolefin 2:1 heat shrink tubing typically requires a temperature of around 90°C–120°C (194°F–248°F) to begin shrinking, and fully recovers at approximately 120°C (248°F). A heat gun is the recommended tool. Avoid open flames, which can scorch or unevenly shrink the tubing.

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

Polyolefin heat shrink tubing generally offers good resistance to UV exposure, moisture, and mild chemicals, making it suitable for many outdoor applications. However, for prolonged submersion or extreme outdoor environments, a dual-wall adhesive-lined variant is typically recommended. Contact us to confirm suitability for your specific use case.

What is the voltage rating of this tubing?

Standard polyolefin 2:1 heat shrink tubing is generally rated for up to 600V. This makes it suitable for most residential and light commercial electrical wiring, automotive wiring harnesses, and low-voltage electronics. For high-voltage industrial applications, please contact us to confirm specifications.

Is this tubing compatible with standard wire gauges and connectors?

Yes. The range of φ11mm to φ45mm covers a wide spectrum of wire gauges and cable bundles. Smaller sizes (φ11mm–φ16mm) are typically suited for individual wires and small connectors, while larger sizes (φ25mm–φ45mm) are generally used for cable bundles, conduit ends, and larger connectors. See variant options for the full size range.

How do I cut the tubing to the right length before shrinking?

Use sharp scissors or a utility knife to cut the tubing before shrinking. Cut slightly longer than needed — typically add 5–10mm (≈0.2–0.4") on each end — to account for any end-shrinkage. The 5-meter rolls are ideal for projects requiring multiple cuts or longer runs.

Does the color affect the electrical or mechanical performance?

No — all seven color options (Black, White, Red, Green, Yellow, Blue, Transparent) are made from the same polyolefin material and share the same electrical and mechanical properties. Color is purely for identification, organization, or aesthetic purposes. Transparent tubing is especially useful when you need to see the underlying wire or label.

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

Heat Shrink Tubing 2:1 Ratio — φ11mm to φ45mm, 7 Colors, 1M & 5M

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Description

Heat Shrink Tubing 2:1 — Reliable Insulation from φ11mm to φ45mm

✅ Key Features of These Heat Shrink Tubing Sleeves

📐 Technical Specifications — Heat Shrink Tubing 2:1 Polyolefin Sleeve

❓ Frequently Asked Questions

Heat Shrink Tubing 2:1 Ratio — φ11mm to φ45mm, 7 Colors, 1M & 5M

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