Gray Silicone Rubber Heat Shrink Tubing — 200°C Rated, 0.8mm–30mm Dia, 1M–10M
Gray Silicone Rubber Heat Shrink Tubing — 200°C Rated, 0.8mm–30mm Dia, 1M–10M
Gray Silicone Rubber Heat Shrink Tubing — 200°C Rated, 0.8mm–30mm Dia, 1M–10M
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Gray Silicone Rubber Heat Shrink Tubing — 200°C Rated, 0.8mm–30mm Dia, 1M–10MGray Silicone Rubber Heat Shrink Tubing — 200°C Rated, 0.8mm–30mm Dia, 1M–10MGray Silicone Rubber Heat Shrink Tubing — 200°C Rated, 0.8mm–30mm Dia, 1M–10M

Gray Silicone Rubber Heat Shrink Tubing — 200°C Rated, 0.8mm–30mm Dia, 1M–10M

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$4.20 USD
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In stock (500 units), ready to be shipped

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Description

 

Gray Silicone Rubber Heat Shrink Tubing — Reliable Cable Protection Up to 200°C

Whether you're rewiring an engine bay, protecting sensor leads in an industrial panel, or tidying up a DIY electronics build, standard PVC sleeving often falls short when heat, chemicals, or flex cycles are involved. Gray silicone rubber heat shrink tubing gives electricians, automotive technicians, and serious hobbyists a durable, flexible solution that holds up where ordinary sleeves fail.

Each piece is cut from solid silicone rubber tubing with a 2:1 shrink ratio. Available in 16 diameters from 0.8mm (≈0.031") to 30mm (≈1.181"), and in lengths of 1M (≈3.3 ft), 2M (≈6.6 ft), 3M (≈9.8 ft), 5M (≈16.4 ft), and 10M (≈32.8 ft). The neutral gray finish blends cleanly into most wiring harnesses and enclosures.

Typical use cases include insulating and bundling automotive wiring harnesses, protecting thermocouple and sensor leads near heating elements, sleeving motor windings in power tools, and organizing cable runs in 3D printers or CNC machines — all applications where a flexible, high-temperature cable sleeve sheath is essential.

ℹ️ Compatibility Note: This tubing has a 2:1 shrink ratio. Select a pre-shrink diameter that is at least 10–20% larger than your cable's outer diameter for a snug, secure fit after heat is applied.

✅ Key Features of These Gray Silicone Rubber Heat Shrink Tubes

  • 🌡️200°C Continuous Rating — Withstands sustained high-heat environments including engine bays, industrial controls, and appliances, where standard PVC heat shrink tubing would soften or crack.
  • 🔄2:1 Shrink Ratio — Shrinks evenly to half its supplied diameter when heated to approximately 120°C–150°C (248°F–302°F), creating a firm, conforming sleeve around irregular cable bundles.
  • 🤸Flexible After Shrinking — Silicone rubber remains pliable at both low and high temperatures, resisting cracking in cold environments and staying supple in heat — ideal for flexible cable sleeve applications with repeated movement.
  • 🌧️Moisture & UV Resistant — Silicone's inherent resistance to water, ozone, and UV makes this tubing a dependable choice for outdoor wiring protection and marine cable management.
  • ⚗️Chemical Resistance — Resists oils, fuels, and many solvents commonly found in automotive and workshop environments, helping maintain insulation integrity over time.
  • 📐Wide Size Range — 16 diameters from 0.8mm to 30mm cover everything from fine sensor wires to large power cables, eliminating the need to stock multiple product lines for a single wiring project.

📐 Technical Specifications — Silicone Rubber Heat Shrink Tubing

Material Silicone Rubber
Color Gray
Shrink Ratio 2:1
Continuous Operating Temp. Up to 200°C (392°F)
Shrink Temperature Typically 120°C–150°C (248°F–302°F)
Available Diameters (Pre-Shrink) 0.8mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 15mm, 20mm, 30mm
Available Lengths 1M (≈3.3 ft), 2M (≈6.6 ft), 3M (≈9.8 ft), 5M (≈16.4 ft), 10M (≈32.8 ft)
Flame Retardant Generally self-extinguishing — contact us to confirm specific rating
Wall Thickness (Pre-Shrink) See variant options
Voltage Rating Contact us to confirm
Application Method Heat gun or oven (open flame not recommended)
⚠️ Heads up: Wall thickness and voltage rating vary by diameter. If your application has specific electrical insulation requirements, please contact us before ordering.

❓ Frequently Asked Questions

How do I choose the right diameter for my wire or cable?

Measure the outer diameter of your wire or cable bundle before shrinking. This silicone heat shrink tubing has a 2:1 shrink ratio, so choose a pre-shrink size whose recovered diameter is slightly smaller than your cable OD. For example, a 4mm tube generally recovers to about 2mm. When in doubt, size up one step to ensure the tubing slides on easily before heating.

What temperature is needed to shrink this tubing?

Silicone rubber heat shrink tubing generally begins to shrink at around 120°C–150°C (248°F–302°F). A heat gun set to medium-high is typically sufficient. Move the heat gun steadily along the tubing to shrink evenly. Avoid open flames, which can cause uneven shrinking or surface scorching.

Can this tubing be used outdoors or in wet environments?

Yes. Silicone rubber is inherently resistant to moisture, UV exposure, and ozone, making it well suited for outdoor wiring, marine cable management, and humid industrial environments. Note that this tubing does not create a fully waterproof seal on its own — for sealed connections, consider adhesive-lined heat shrink tubing instead.

What is the continuous operating temperature rating?

This tubing is rated for continuous use up to 200°C (392°F). That makes it suitable for high-temperature cable sleeve applications such as engine bay wiring, industrial control panels, and cables routed near heating elements or motors.

Is this tubing flame-retardant?

Silicone rubber heat shrink tubing is generally self-extinguishing and meets flame-retardant requirements in most formulations. If your application requires a specific UL 224 or VW-1 flame rating, please contact us to confirm compliance before ordering.

How do I convert the diameter sizes to inches?

Divide the mm value by 25.4 to convert to inches. Quick reference: 1mm ≈ 0.039" | 3mm ≈ 0.118" | 6mm ≈ 0.236" | 10mm ≈ 0.394" | 20mm ≈ 0.787" | 30mm ≈ 1.181". All diameters listed are pre-shrink (supplied) sizes.

What length should I order for my project?

Measure the total length of cable runs you need to cover, then add 10–15% for trimming and overlap at terminations. For small repairs or prototyping, 1M or 2M lengths are typically sufficient. For wiring harnesses or bulk workshop use, 5M or 10M rolls generally offer better value per meter.

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

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