Black Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ55mm, 1m–50m
Black Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ55mm, 1m–50m
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Black Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ55mm, 1m–50mBlack Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ55mm, 1m–50m

Black Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ55mm, 1m–50m

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By HomeDIYer®

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$2.79 USD
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In stock (500 units), ready to be shipped

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Description

 

Black Silicone Rubber Heat Shrink Tubing — Reliable Insulation from φ0.8mm to φ55mm

Whether you're a hobbyist rewiring a vintage motorcycle, an electrician bundling cables in a commercial panel, or an engineer protecting sensor leads in a high-heat environment, finding heat shrink tubing that holds up under real-world conditions matters. Standard PVC or polyolefin tubing often cracks, stiffens, or fails when temperatures climb — leaving your connections exposed and your project at risk.

This black silicone rubber heat shrink tubing is available in a wide range of diameters from φ0.8mm (≈1/32") to φ55mm (≈2-3/16"), and in lengths of 1m (≈3.3 ft), 5m (≈16.4 ft), 10m (≈32.8 ft), 20m (≈65.6 ft), and 50m (≈164 ft). Each piece is made from flexible silicone rubber, which maintains its pliability across a broad temperature range and resists UV, ozone, and moisture. The tubing ships as a continuous length — cut to the exact size you need on the job.

Typical applications include automotive wiring harness repair, marine cable protection, industrial sensor lead insulation, DIY electronics projects, and high-temperature wire bundling in appliances or HVAC systems. The flexible silicone construction makes it especially well-suited for tight bends and vibration-prone installations where rigid tubing would crack or fatigue over time.

ℹ️ Compatibility Note: This tubing is designed for general electrical insulation and mechanical protection. It is compatible with copper, aluminum, and most insulated wire types. For high-voltage or safety-critical applications, please confirm the voltage rating with us before ordering.

✅ Key Features of These Black Silicone Rubber Heat Shrink Tubes

  • 🌡️Wide Temperature Range — Silicone rubber typically withstands continuous exposure from -60°C to +200°C (-76°F to +392°F), making this black silicone heat shrink tubing suitable for engine bays, industrial ovens, and outdoor installations.
  • 🔄Flexible After Shrinking — Unlike rigid alternatives, this tubing stays soft and pliable after heat is applied, reducing stress on wire insulation in vibration-heavy or tight-bend applications such as automotive and marine wiring.
  • 📏Broad Size Selection — With 25 diameter options from φ0.8mm to φ55mm, you can insulate everything from fine sensor wires to large cable bundles — all from a single trusted source for flexible heatshrink tube.
  • ☀️UV & Ozone Resistant — Silicone rubber resists UV radiation and ozone degradation, making this heat shrink tubing a dependable choice for outdoor electrical enclosures, solar panel wiring, and rooftop installations.
  • ⚡Electrical Insulation — Silicone is a proven dielectric material, providing reliable electrical insulation for wire splices, terminal covers, and connector boots in low- to medium-voltage DC and AC circuits.
  • ✂️Cut-to-Length Convenience — Available in 1m, 5m, 10m, 20m, and 50m rolls, so you only buy what you need. Bulk lengths reduce per-meter cost for workshops, repair shops, and production environments using silicone rubber heat shrink tubing regularly.

📐 Technical Specifications — Silicone Rubber Heat Shrink Tubing

Material Silicone rubber
Color Black
Diameter Range (pre-shrink) φ0.8mm (≈1/32") — φ55mm (≈2-3/16")
Available Diameters φ0.8, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 5.5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 25, 30, 35, 40, 48, 55 mm
Available Lengths 1m (≈3.3 ft), 5m (≈16.4 ft), 10m (≈32.8 ft), 20m (≈65.6 ft), 50m (≈164 ft)
Shrink Ratio Typically 2:1 — see variant options to confirm
Operating Temperature Typically -60°C to +200°C (-76°F to +392°F) — contact us to confirm for your variant
Shrink Temperature Typically 120–150°C (248–302°F)
Flexibility Remains flexible after shrinking
UV / Ozone Resistance Yes — suitable for outdoor use
Electrical Insulation Yes — silicone dielectric
Wall Thickness (post-shrink) See variant options
Application Method Heat gun (recommended) or hot air source
Sold As Continuous length (cut to size)
⚠️ Spec Note: Exact wall thickness and post-shrink inner diameter vary by size. If you need precise recovered dimensions for a critical fit, contact us before ordering and we'll confirm the specs for your chosen diameter.

❓ Frequently Asked Questions

How do I choose the right diameter for my application?

Measure the outer diameter of the object you need to cover before shrinking. The tubing's recovered (post-shrink) inner diameter should be smaller than that measurement. As a general rule, select a pre-shrink diameter that is typically 20–30% larger than the object's diameter to allow easy insertion, then let the heat do the rest. For example, a φ3mm tube generally suits wires or cables in the 1.5–2mm range. To convert mm to inches, divide by 25.4 — e.g., φ6mm ≈ 0.236" (about 1/4").

What temperature is needed to shrink this tubing?

Silicone rubber heat shrink tubing typically activates at around 120–150°C (248–302°F). A heat gun set to low-to-medium output works well. Avoid open flames, as uneven heat can cause uneven shrinkage or surface damage. Keep the heat gun moving steadily along the length of the tube for a uniform, wrinkle-free result.

Can this tubing be used outdoors or in high-temperature environments?

Yes. Silicone rubber is generally rated for continuous use across a wide temperature range — typically -60°C to +200°C (-76°F to +392°F) — making it suitable for outdoor wiring, automotive engine bays, and industrial equipment. Please confirm the exact rating for your specific variant before use in safety-critical applications.

Is this tubing resistant to chemicals and UV exposure?

Silicone rubber generally offers good resistance to UV radiation, ozone, and many common chemicals including oils and mild acids. It is not recommended for prolonged exposure to concentrated solvents such as acetone or MEK. For specific chemical compatibility requirements, contact us to confirm before ordering.

What is the shrink ratio of this tubing?

This silicone heat shrink tubing typically has a 2:1 shrink ratio, meaning it shrinks to approximately half its original inner diameter when heat is applied. For example, a φ6mm tube would typically recover to around φ3mm. See variant options for the specific pre-shrink and post-shrink dimensions of each size, or contact us to confirm.

Can I use this for electrical insulation on wires and cables?

Yes. Silicone rubber is an excellent electrical insulator and is commonly used for wire splices, terminal insulation, and cable bundling in automotive, marine, and electronics applications. Always verify the voltage rating is appropriate for your specific use case. For high-voltage applications, contact us to confirm the dielectric strength of your chosen size.

How do I convert the diameter sizes from mm to inches?

Divide the mm value by 25.4 to get inches. Quick reference: φ3mm ≈ 0.118" (≈1/8"), φ6mm ≈ 0.236" (≈1/4"), φ12mm ≈ 0.472" (≈1/2"), φ25mm ≈ 0.984" (≈1"), φ40mm ≈ 1.575" (≈1-9/16"), φ55mm ≈ 2.165" (≈2-3/16"). If you're unsure which size fits your cable, measure the cable OD with calipers and choose the next size up.

Which length option should I buy for a one-time repair vs. ongoing workshop use?

For a single repair or small project, the 1m or 5m option is generally sufficient. If you run a repair shop, do regular automotive or marine wiring work, or need consistent stock on hand, the 10m, 20m, or 50m rolls offer a lower per-meter cost and reduce reorder frequency. Bulk lengths are also useful when working with multiple diameter sizes across a project.

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

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