35mm 2:1 Heat Shrink Tubing – Electrical Insulation Sleeve for Cable & Wire

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35mm 2:1 Heat Shrink Tubing – Electrical Insulation Sleeve for Cable & Wire

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Color: Black

Length: 1 Meter

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35mm 2:1 Heat Shrink Tubing — Reliable Electrical Insulation for Large-Diameter Cables

Dealing with exposed wire splices, frayed cable ends, or bundled harnesses that need a clean, protected finish? Whether you're an electrician, automotive technician, marine rigger, or serious DIYer, loose or unprotected wiring is a safety hazard and an eyesore. This 35mm 2:1 heat shrink tubing gives you a fast, professional-grade solution that seals, insulates, and organizes in one step.

Each order includes a continuous length of polyolefin heat shrink tubing with a 35mm (≈1-3/8") inner diameter before shrinking and a 2:1 shrink ratio — meaning it recovers to approximately 17.5mm (≈11/16") when heat is applied. Available in lengths from 1 Meter (≈3.3 ft) up to 15 Meters (≈49.2 ft), and in seven colors: Black, White, Red, Green, Yellow, Blue, and Transparent. Cut to any length you need before applying heat.

Ideal for insulating wire splices and solder joints in automotive wiring harnesses, protecting cable ends on marine and RV electrical systems, color-coding and bundling multi-conductor cable runs in panel builds, and strain-relief on power tool cords or extension cable repairs.

🔌 Compatibility: Fits cables and bundles with an outer diameter up to approximately 30–33mm (≈1.2"–1.3"). Shrinks to approximately 17.5mm (≈11/16"). Suitable for low-voltage electrical insulation, wire bundling, and cable identification. Confirm your cable OD before ordering.

✅ Key Features of These 35mm 2:1 Heat Shrink Tubing Sleeves

🔥2:1 Shrink Ratio — Shrinks from 35mm (≈1-3/8") down to approximately 17.5mm (≈11/16"), conforming tightly around large-diameter cables, connectors, and wire bundles for a secure, gap-free fit.
🛡️Polyolefin Insulation — Made from flexible polyolefin material that provides solid dielectric insulation, resists moisture, and holds up to the mechanical stress of everyday electrical and automotive wiring applications.
🎨7 Color Options — Available in Black, White, Red, Green, Yellow, Blue, and Transparent, making it easy to color-code wire harnesses, identify circuits at a glance, or match existing cable management systems.
📏6 Length Options — Choose from 1 Meter (≈3.3 ft) through 15 Meters (≈49.2 ft) so you only buy what you need — whether it's a single repair job or a full panel wiring project.
✂️Cut-to-Length Flexibility — The continuous roll format lets you cut each piece to the exact length required, reducing waste and giving you precise coverage on splices, terminals, and strain-relief points.
⚡Low Activation Temperature — Begins shrinking at approximately 90°C (194°F) with a standard heat gun, making installation fast and consistent without requiring specialized equipment.

📐 Technical Specifications — 35mm 2:1 Heat Shrink Tubing

Product Type	Heat Shrink Tubing / Electrical Insulation Sleeve
Inner Diameter (Before Shrink)	35mm (≈1-3/8")
Recovered Diameter (After Shrink)	Approximately 17.5mm (≈11/16")
Shrink Ratio	2:1
Material	Polyolefin
Available Colors	Black, White, Red, Green, Yellow, Blue, Transparent
Available Lengths	1m (≈3.3 ft), 3m (≈9.8 ft), 5m (≈16.4 ft), 8m (≈26.2 ft), 10m (≈32.8 ft), 15m (≈49.2 ft)
Activation Temperature	Typically 90°C (194°F)
Full Shrink Temperature	Typically 120°C (248°F)
Wall Thickness (After Shrink)	See variant options
Voltage Rating	Contact us to confirm
Compliance	Contact us to confirm
Application Method	Heat gun recommended

⚠️ Sizing Note: Always measure your cable's outer diameter before ordering. The 35mm inner diameter accommodates cables up to approximately 30–33mm OD. If your cable is smaller, consider a narrower tubing size for a tighter recovered 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 3 Meter or 5 Meter options offer better value.

What does 2:1 shrink ratio mean?

A 2:1 shrink ratio means the tubing will shrink to approximately half its original diameter when heat is applied. This 35mm tubing will shrink down to roughly 17.5mm (≈11/16"), conforming tightly around the cable or connector for a secure, insulated fit.

What temperature is needed to shrink this tubing?

Polyolefin heat shrink tubing generally activates at temperatures around 90°C (194°F) and fully shrinks at approximately 120°C (248°F). A heat gun is the recommended tool. Avoid open flames, as uneven heat can damage the tubing or the underlying wire insulation.

Can this heat shrink tubing be used outdoors?

Standard polyolefin heat shrink tubing provides good moisture resistance and is generally suitable for protected outdoor environments. For prolonged UV exposure or submersion, an adhesive-lined or marine-grade variant is typically recommended. Contact us to confirm suitability for your specific outdoor application.

What wire or cable diameter fits inside 35mm heat shrink tubing?

The 35mm refers to the inner diameter before shrinking. It is generally suitable for cables or bundles with an outer diameter up to approximately 30–33mm (≈1.2"–1.3"). After shrinking, it will conform to cables as small as roughly 17–18mm (≈11/16"). See variant options for exact recovered diameter if available.

Is this tubing RoHS compliant and safe for electrical use?

This heat shrink tubing is made from polyolefin, which is generally RoHS-compliant and widely used in electrical insulation applications. It provides solid dielectric insulation for low-voltage wiring. Contact us to confirm compliance documentation for your specific regulatory requirements.

Can I use a lighter or hair dryer instead of a heat gun?

A hair dryer typically does not reach the temperatures needed for reliable shrinking on 35mm tubing. A heat gun is strongly recommended. A lighter can work in a pinch for small sections but risks scorching the tubing or the wire — use with caution and keep the flame moving.

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

35mm 2:1 Heat Shrink Tubing – Electrical Insulation Sleeve for Cable & Wire

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35mm 2:1 Heat Shrink Tubing — Reliable Electrical Insulation for Large-Diameter Cables

✅ Key Features of These 35mm 2:1 Heat Shrink Tubing Sleeves

📐 Technical Specifications — 35mm 2:1 Heat Shrink Tubing

❓ Frequently Asked Questions

35mm 2:1 Heat Shrink Tubing – Electrical Insulation Sleeve for Cable & Wire

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