Is this tubing compatible with standard wire and cable sizes?

The 90mm pre-shrink diameter is designed for large-diameter cables, conduit bundles, or grouped wire harnesses. It is compatible with any round cable or bundle that fits within the 90mm opening before shrinking.

What is the minimum shrink temperature for this tubing?

Polyolefin heat shrink tubing of this type typically begins to shrink at around 90°C (194°F) and reaches full shrink at approximately 120°C (248°F). Exact activation temperature may vary — contact us to confirm for your application.

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home > 90mm Black Heat Shrink Tubing 2:1 Shrink Ratio – Electrical Wire Sleeve > 90mm Black Heat Shrink Tubing 2:1 Shrink Ratio – Electrical Wire Sleeve

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90mm Black Heat Shrink Tubing 2:1 Shrink Ratio – Electrical Wire Sleeve90mm Black Heat Shrink Tubing Reliable Insulation for Large Cable Runs Electricians, auto technicians, and DIY enthusiasts working with large gauge wiring know the frustration of exposed splices, frayed insulation, and connectors that won't stay protected. Whether you're building a wiring harness, repairing marine cables, or bundling conduit runs, having the right large diameter heat shrink tubing on hand makes the difference between a clean, lasting

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90mm Black Heat Shrink Tubing — Reliable Insulation for Large Cable Runs

Electricians, auto technicians, and DIY enthusiasts working with large-gauge wiring know the frustration of exposed splices, frayed insulation, and connectors that won't stay protected. Whether you're building a wiring harness, repairing marine cables, or bundling conduit runs, having the right large-diameter heat shrink tubing on hand makes the difference between a clean, lasting repair and one that fails under stress.

This 90mm black heat shrink tubing features a 2:1 shrink ratio, meaning it shrinks to approximately 45mm (≈1.77") when heat is applied. Each piece is sold by the meter — choose from 1 meter (≈39.4"), 2 meters (≈78.7"), or 3 meters (≈118.1") to match your project scope. Made from flexible polyolefin material, it delivers consistent wall coverage and a firm grip around cables, connectors, and bundled wire groups.

Ideal for automotive wiring harness protection, marine cable insulation, industrial conduit bundling, and electrical panel wire management — this large-diameter heat shrink sleeve keeps connections secure and insulated in demanding environments.

🔌 Compatibility: Fits cables and bundles up to 90mm (≈3.54") in diameter before shrinking. Shrinks to approximately 45mm (≈1.77"). Compatible with standard heat guns operating at 90°C–120°C (194°F–248°F). Verify your cable OD before ordering.

✅ Key Features of These 90mm Heat Shrink Tubing Sleeves

🔥2:1 Shrink Ratio — Shrinks from 90mm down to approximately 45mm, creating a firm, uniform grip around large cables, conduit bundles, and grouped wire harnesses.
⚡Electrical Insulation — Polyolefin construction provides reliable dielectric insulation for wire splices, terminals, and connectors in low- to medium-voltage electrical applications.
🛡️Moisture & Abrasion Resistance — The shrunk sleeve forms a protective barrier against moisture ingress, dust, and mechanical abrasion — extending the service life of your cable runs.
✂️Cut-to-Length Flexibility — Available in 1, 2, and 3 meter lengths; cuts cleanly with scissors or a utility knife so you get exactly the coverage you need without waste.
🖤Black Finish for Clean Routing — The matte black color blends naturally into automotive, industrial, and electrical panel environments, giving cable runs a tidy, professional appearance.
🌡️Heat Gun Compatible — Designed for use with standard heat guns; shrinks evenly without scorching, making it suitable for both workshop and field repair applications.

📐 Technical Specifications — 90mm Heat Shrink Tubing

Product Type	Heat Shrink Tubing / Electrical Sleeve
Pre-Shrink Diameter	90mm (≈3.54")
Post-Shrink Diameter	Approximately 45mm (≈1.77")
Shrink Ratio	2:1
Color	Black
Available Lengths	1 Meter (≈39.4"), 2 Meter (≈78.7"), 3 Meter (≈118.1")
Material	Polyolefin (typically)
Activation Temperature	Typically 90°C–120°C (194°F–248°F)
Wall Thickness (post-shrink)	See variant options
Voltage Rating	Contact us to confirm
Operating Temperature Range	Contact us to confirm
Application Method	Heat gun recommended
Compliance / Standards	Contact us to confirm

⚠️ Heads up: If your application requires specific voltage ratings, wall thickness, or compliance certifications (UL, RoHS, etc.), please contact us before ordering so we can confirm the exact specification for your needs.

❓ 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 overlap at each end. For longer cable runs or harness builds, the 2-meter or 3-meter option is generally more economical than cutting multiple short pieces.

What does the 2:1 shrink ratio mean?

A 2:1 ratio means the tubing will shrink to approximately half its original diameter when heat is applied. This 90mm tubing will typically shrink down to around 45mm (≈1.77"), providing a snug fit over large cables, conduit bundles, or grouped connectors.

How strong is the insulation provided by this tubing?

Polyolefin heat shrink tubing of this type generally provides solid electrical insulation suitable for low- to medium-voltage applications. For exact dielectric strength or voltage ratings required for your project, please contact us to confirm specifications before ordering.

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

Standard polyolefin heat shrink tubing offers basic moisture resistance and is suitable for many indoor and sheltered outdoor applications. For prolonged UV exposure or submersion, an adhesive-lined (dual-wall) or UV-stabilized variant is generally recommended for better long-term protection.

Is this tubing compatible with my cable or wire bundle size?

The 90mm pre-shrink diameter is designed for large-diameter cables, conduit bundles, or grouped wire harnesses. In most cases, any round cable or bundle with an outer diameter up to 90mm will fit before shrinking. After shrinking, the tubing will conform tightly to bundles down to approximately 45mm in diameter.

What tool do I use to shrink this tubing?

A heat gun is the recommended tool for even, controlled shrinking. Move the heat gun slowly along the length of the tubing for uniform results. In a pinch, a lighter or torch can be used carefully, but a heat gun provides more consistent shrinkage and reduces the risk of scorching the tubing or underlying wires.

Can I cut this tubing to a custom length?

Yes. The tubing can be cut to any length with standard scissors or a utility knife before application. Cut ends remain clean and do not fray, making it straightforward to customize for your specific project without any special tools.

Is this the right product for automotive wiring harness repair?

This 90mm heat shrink tubing is well-suited for protecting large automotive wiring harnesses, bundling multiple cables together, and insulating large-gauge wire splices. For smaller individual wires within a harness, you would typically use a smaller diameter tubing alongside this sleeve. If you're unsure which size fits your harness, contact us with your cable bundle OD and we'll help you select the right option.

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

90mm Black Heat Shrink Tubing 2:1 Shrink Ratio – Electrical Wire Sleeve

Name: 90mm Black Heat Shrink Tubing 2:1 Shrink Ratio – Electrical Wire Sleeve
Brand: plataformaevia.es
SKU: 210007038
Price: 37.77 USD
Availability: InStock
Rating: 4.3582 (853 reviews)