What wire gauges or connector types is this compatible with?

The wide diameter range (φ1mm to φ50mm) makes this tubing compatible with a broad range of wire gauges, from fine signal wires to large power cables, as well as connectors, terminals, solder joints, and cable bundles. Select the diameter based on the outer dimension of the item being covered.

2:1 Heat Shrink Tubing — Grey Electrical Shrinkable Sleeving, Ø1mm to Ø50mm

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2:1 Heat Shrink Tubing — Grey Electrical Shrinkable Sleeving, Ø1mm to Ø50mm

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Sizes(mm): φ1mm

Length(Metres): 1M

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$1.35 USD

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Verfügbar (500 Stück), versandbereit

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2:1 Heat Shrink Tubing — Reliable Insulation & Protection for Every Wire and Connection

Whether you're rewiring a vehicle, repairing household appliances, or organizing cable runs in a control panel, exposed wire ends and bare solder joints are a constant hazard. Electricians, automotive technicians, hobbyists, and DIYers all face the same challenge: finding heat shrink tubing that fits the exact diameter they need, in a length that doesn't leave half a roll going to waste. This 2:1 heat shrink tubing is stocked in a full range of sizes to solve that problem.

Each piece is a single continuous length of grey polyolefin shrinkable sleeving, available in diameters from φ1mm (≈3/64") to φ50mm (≈2") and in cut lengths of 1M (≈3.3 ft), 2M (≈6.6 ft), 5M (≈16.4 ft), and 10M (≈32.8 ft). The 2:1 shrink ratio means the tubing recovers to approximately half its original inner diameter when heat is applied, forming a tight, uniform sleeve around the covered component. The grey finish blends cleanly into most wiring environments.

Typical applications include insulating automotive wiring harnesses and trailer connectors, protecting solder joints on marine and outdoor electrical installations, bundling and labeling multi-conductor cable runs in workshops and control cabinets, and strain-relieving connector backshells on test equipment and power supplies.

ℹ️ Compatibility Note: Select the diameter that is approximately 20–30% larger than the object you need to cover. After shrinking, the tubing will recover to roughly half its original inner diameter. If you are unsure which size fits your application, contact us before ordering.

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

🔥2:1 Shrink Ratio — Recovers to approximately half its original inner diameter, creating a firm, uniform fit around wires, terminals, and connectors without gaps or loose ends.
📏Wide Diameter Range — Available from φ1mm to φ50mm in a single product line, covering everything from fine signal wires to large-gauge power cables and cable bundles.
🧪Polyolefin Construction — Polyolefin material provides solid electrical insulation, resistance to moisture and mild chemicals, and stable performance across a broad temperature range for automotive and industrial shrinkable sleeving applications.
✂️Cut-to-Length Flexibility — Sold in 1M, 2M, 5M, and 10M continuous lengths so you can cut exactly what each job requires, reducing waste on small repairs and keeping enough on hand for larger wiring projects.
🔌Clean Grey Finish — The neutral grey color integrates neatly into automotive wiring harnesses, control panel cable management, and workshop electrical repairs without drawing attention.
⚡Electrical Insulation & Strain Relief — Once shrunk, the tubing forms a protective layer that insulates solder joints and bare conductors, reduces mechanical stress at connection points, and helps prevent abrasion on wire runs passing through panels or conduit.

📐 Technical Specifications — Heat Shrink Tubing

Product Type	2:1 Ratio Heat Shrink Tubing
Material	Polyolefin
Color / Finish	Grey
Shrink Ratio	2:1
Diameter Range (Before Shrink)	φ1mm (≈3/64") — φ50mm (≈2")
Available Sizes	φ1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 20, 25, 30, 40, 50mm
Available Lengths	1M (≈3.3 ft), 2M (≈6.6 ft), 5M (≈16.4 ft), 10M (≈32.8 ft)
Shrink Temperature	Typically begins at ~70–90°C (158–194°F); full recovery at ~120°C (248°F)
Voltage Rating	Contact us to confirm
Operating Temperature Range	See variant options
Wall Thickness (After Shrink)	See variant options
Application Method	Heat gun recommended; open flame with caution
Typical Use	Wire insulation, solder joint protection, cable bundling, strain relief

⚠️ Sizing Tip: Diameter specifications refer to the inner diameter before shrinking. Always verify the outer diameter of your wire or connector before selecting a size. When in doubt, size up — tubing that is slightly oversized before shrinking is easier to slide into position.

❓ Frequently Asked Questions

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

Measure the outer diameter of the wire, connector, or bundle you need to cover. Choose a tubing diameter that is typically 20–30% larger than the object before shrinking. For example, a 4mm wire bundle generally works well with φ5mm or φ6mm tubing. After applying heat, the tubing shrinks to approximately half its original diameter (2:1 ratio), creating a snug fit.

What shrink ratio does this tubing use?

This tubing uses a 2:1 shrink ratio, meaning it shrinks to approximately half its original inner diameter when heat is applied. For example, φ10mm (≈3/8") tubing will shrink down to roughly φ5mm (≈3/16").

What temperature is needed to shrink this tubing?

This tubing generally begins to shrink at around 70–90°C (158–194°F) and fully recovers at approximately 120°C (248°F). A heat gun is the recommended tool for even, controlled shrinkage. An open flame can be used with caution but may cause uneven shrinkage or surface scorching.

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

Polyolefin heat shrink tubing typically offers good resistance to moisture, UV exposure, and mild chemicals, making it generally suitable for outdoor use in protected or semi-exposed environments such as automotive wiring and outdoor junction boxes. For fully submerged or extreme outdoor applications, an adhesive-lined (dual-wall) heat shrink variant is typically recommended for a watertight seal.

What is the voltage rating of this heat shrink tubing?

Polyolefin heat shrink tubing of this type is generally rated for low- to medium-voltage applications, typically up to 600V. Please contact us to confirm the exact dielectric rating for your specific application before use in safety-critical circuits.

Can I cut this tubing to a custom length?

Yes. The tubing is sold in continuous lengths of 1M, 2M, 5M, and 10M and can be cut to any length with scissors or a utility knife before shrinking. Longer lengths (5M and 10M) offer better value per meter for larger wiring projects or workshop stock.

What wire gauges and connector types is this compatible with?

The wide diameter range — φ1mm to φ50mm — makes this industrial shrinkable sleeving compatible with a broad range of wire gauges, from fine signal wires (AWG 28–30) to large power cables, as well as crimp terminals, solder joints, connector backshells, and multi-conductor cable bundles. Select the diameter based on the outer dimension of the item being covered.

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

2:1 Heat Shrink Tubing — Grey Electrical Shrinkable Sleeving, Ø1mm to Ø50mm

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Beschreibung

2:1 Heat Shrink Tubing — Reliable Insulation & Protection for Every Wire and Connection

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

📐 Technical Specifications — Heat Shrink Tubing

❓ Frequently Asked Questions

2:1 Heat Shrink Tubing — Grey Electrical Shrinkable Sleeving, Ø1mm to Ø50mm

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