100mm 2:1 Heat Shrink Tubing – Large Diameter Electrical Insulation Sleeve (Black & Transparent)

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100mm 2:1 Heat Shrink Tubing – Large Diameter Electrical Insulation Sleeve (Black & Transparent)

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Color: Black

Length: 1 Meter

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100mm Heat Shrink Tubing — Reliable Large-Diameter Insulation for Cables & Wire Bundles

When you're working with thick cable bundles, conduit terminations, or large wire harnesses, standard heat shrink just doesn't cut it. Electricians, marine riggers, automotive builders, and serious DIYers all run into the same problem: finding a large-diameter heat shrink sleeve that actually fits, shrinks evenly, and holds up over time. This 100mm 2:1 heat shrink tubing is built for exactly those situations.

Each piece is a single continuous sleeve of polyolefin heat shrink tubing with a 2:1 shrink ratio — meaning it shrinks from 100mm (approx. 3.94") down to approximately 50mm (approx. 1.97") when heat is applied. Available in Black and Transparent finishes, sold in 1 Meter (approx. 39.4") and 2 Meter (approx. 78.7") lengths so you can match the quantity to your project without waste.

Typical use cases include protecting large cable bundle joints in electrical panels, sealing conduit ends on outdoor wiring runs, covering battery terminal connections in RV and marine builds, and insulating thick wire harnesses in automotive or industrial applications — all scenarios where a large diameter heat shrink sleeve for wire bundles is the right call.

🔌 Compatibility: Fits cable and bundle outer diameters up to 100mm (approx. 3.94"). Shrinks to approximately 50mm (approx. 1.97") at full 2:1 ratio. Suitable for polyolefin-compatible heat gun application. Confirm bundle diameter before ordering.

✅ Key Features of These 100mm 2:1 Heat Shrink Tubes

📐True 100mm Pre-Shrink Diameter — Sized to slip over large cable bundles, conduit ends, and thick wire harnesses without forcing or stretching.
🔥2:1 Shrink Ratio for Secure Fit — Shrinks evenly to roughly half its diameter, conforming tightly around irregular bundle shapes for a clean, professional finish.
⚡Electrical Insulation Sleeve Performance — Polyolefin construction provides solid dielectric protection, keeping moisture and abrasion away from exposed conductors and connection points.
🎨Two Finish Options: Black & Transparent — Black for UV-resistant outdoor runs and clean panel work; transparent so cable labels and color coding remain visible after installation.
📏Cut-to-Length Flexibility — Available in 1m and 2m lengths, easily cut with scissors or a utility knife so you use exactly what you need for each joint or run.
🌡Heat Gun Compatible — Designed for controlled heat gun application, allowing even shrinkage across the full 100mm diameter without scorching or uneven pull-back.

⚠ Spec Note: Exact voltage rating and temperature range vary by production batch. If your application requires certified dielectric specs (e.g., UL, RoHS), please contact us to confirm before ordering.

📐 Technical Specifications — Large Diameter Heat Shrink Tubing

Product Type	Heat Shrink Tubing / Electrical Insulation Sleeve
Pre-Shrink Diameter	100mm (approx. 3.94")
Post-Shrink Diameter (min.)	Approximately 50mm (approx. 1.97") at full 2:1 ratio
Shrink Ratio	2:1
Available Lengths	1 Meter (approx. 39.4") / 2 Meter (approx. 78.7")
Available Colors	Black / Transparent
Material	Polyolefin (generally)
Voltage Rating	See variant options — contact us to confirm
Operating Temperature	See variant options — contact us to confirm
Shrink Temperature	Typically 90°C–120°C (194°F–248°F)
Wall Thickness (after shrink)	See variant options — contact us to confirm
Application Tool	Heat gun (recommended)
Certifications	Contact us to confirm

❓ Frequently Asked Questions

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

Measure the section of cable or bundle you need to cover and add at least 10–15% extra to account for shrinkage along the length. For most applications, 1 meter (approx. 39.4") covers a single run, while 2 meters (approx. 78.7") suits longer conduit wraps or multiple joints in one project.

What does 2:1 shrink ratio mean?

A 2:1 ratio means the tubing shrinks to approximately half its original diameter when heat is applied. This 100mm tubing will shrink down to roughly 50mm (approx. 1.97"), making it suitable for large cable bundles, conduit ends, and thick wire harnesses.

How strong is the insulation provided by this tubing?

Heat shrink tubing of this type generally provides solid electrical insulation, typically rated for voltages up to 600V in standard polyolefin grades. For exact dielectric ratings specific to this product, please contact us to confirm before use in safety-critical applications.

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

Standard polyolefin heat shrink tubing is generally moisture-resistant and suitable for protected outdoor use. For fully submersed or harsh marine environments, we recommend confirming the specific grade with us before purchase. The black variant typically offers better UV resistance than the transparent option.

What tools do I need to apply this tubing?

A heat gun is the recommended tool for even, controlled shrinkage across a large-diameter sleeve like this. A lighter or torch can work in a pinch but may cause uneven shrinking or scorching on 100mm tubing. Keep the heat source moving in a slow, sweeping motion to avoid hot spots.

Is the transparent version truly clear after shrinking?

The transparent variant is designed to remain visually clear after shrinking, allowing you to see cable labels, color coding, or connector markings underneath. Clarity may vary slightly depending on heat application technique — even, moderate heat generally produces the clearest result.

What cable or conduit sizes does 100mm heat shrink tubing fit?

This tubing fits cables and bundles with an outer diameter of up to approximately 100mm (approx. 3.94") before shrinking. After full shrinkage at 2:1 ratio, it conforms to diameters down to roughly 50mm (approx. 1.97"). Always measure your bundle's outer diameter before ordering to ensure a proper fit.

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

100mm 2:1 Heat Shrink Tubing – Large Diameter Electrical Insulation Sleeve (Black & Transparent)

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Beschreibung

100mm Heat Shrink Tubing — Reliable Large-Diameter Insulation for Cables & Wire Bundles

✅ Key Features of These 100mm 2:1 Heat Shrink Tubes

📐 Technical Specifications — Large Diameter Heat Shrink Tubing

❓ Frequently Asked Questions

100mm 2:1 Heat Shrink Tubing – Large Diameter Electrical Insulation Sleeve (Black & Transparent)

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