Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYer
Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYer
Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYer
Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYer
Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYer
Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYer
Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYer
Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYer
Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYer
Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYer
Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYer
Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYer
Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYer
Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYer
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Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYerSilicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYerSilicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYerSilicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYerSilicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYerSilicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYerSilicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYerSilicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYerSilicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYerSilicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYerSilicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYerSilicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYerSilicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYerSilicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors - HomeDIYer

Silicone Rubber Heat Shrink Tubing — φ0.8mm to φ40mm, Multiple Colors

HomeDIYer
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By HomeDIYer®

Price:
$3.06 USD
Stock:
In stock (500 units), ready to be shipped

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Description

Silicone Rubber Heat Shrink Tubing — Reliable Wire Insulation from φ0.8mm to φ40mm

Wiring projects stall when you can't find tubing that fits both the wire gauge and the environment. Standard PVC heat shrink cracks in cold storage, melts near engine heat, and turns brittle after a season outdoors — leaving exposed conductors and failed connections. Whether you're a hobbyist rewiring a vintage motorcycle, an electrician color-coding a control panel, or a maker building a custom LED rig, you need insulation that holds up without constant replacement.

This silicone rubber heat shrink tubing is sold by the meter in two cut lengths — 1 Meter (≈39.4") and 5 Meter (≈196.9") — and spans 19 diameter sizes from φ0.8mm (≈0.031") to φ40mm (≈1.57"). The silicone compound maintains flexibility across a wide temperature range and resists moisture, UV, and mild chemicals. Nine color options — Black, White, Iron Red, Bright Red, Pink, Blue, Yellow, Grey, and Iron Red + Thick wall — let you follow standard wiring color codes or create your own visual system at a glance.

Typical use cases include automotive wiring harness repair, battery pack lead insulation for RC vehicles and e-bikes, cable strain relief on DIY electronics, color-coded wire identification in home electrical panels, and protective sleeving for thermocouple leads in 3D printers or HVAC systems.

🔌 Compatibility: Fits standard wire gauges from AWG 30 down to large multi-conductor cables. Activates with any heat gun, hot air station, or heat shrink oven. Not recommended for use with open flame torches.

✅ Key Features of These Silicone Rubber Heat Shrink Tubes

  • 🌡️Wide Temperature Tolerance — Silicone rubber generally maintains flexibility from approximately -60°C (-76°F) to +200°C (+392°F), making it a practical choice for automotive engine bay wiring and industrial heat shrink tubing applications where PVC would soften or crack.
  • 📏19 Diameter Sizes in One Listing — From φ0.8mm (≈0.031") for fine instrument wire up to φ40mm (≈1.57") for large cable bundles, eliminating the need to source multiple products for a single project.
  • 🎨9 Color Options for Visual Wire Identification — Black, White, Iron Red, Bright Red, Pink, Blue, Yellow, Grey, and a thicker-wall Iron Red variant let you apply color-coded heat shrink tubing to match standard wiring conventions or custom labeling schemes.
  • 💧Moisture and UV Resistant — The silicone base resists water ingress and UV degradation, making this flexible heat shrink tubing suitable for outdoor cable protection, marine wiring, and garden lighting installations.
  • ✂️Clean-Cut Ends, No Fraying — Unlike braided sleeving, silicone tubing cuts cleanly with scissors or a utility knife. The 1-meter and 5-meter lengths give you flexibility to cut exact segments without waste.
  • ⚡Electrical Insulation Integrity — Silicone provides reliable dielectric insulation for low-voltage DC wiring, sensor leads, and signal cables. Color pigments do not affect the insulation properties of the base material.

📐 Technical Specifications — Silicone Heat Shrink Tubing

Material Silicone rubber
Diameter Range φ0.8mm (≈0.031") — φ40mm (≈1.57"); 19 sizes available
Available Lengths 1 Meter (≈39.4") / 5 Meter (≈196.9")
Colors Black, White, Iron Red, Bright Red, Pink, Blue, Yellow, Grey, Iron Red + Thick
Shrink Ratio Typically 2:1 — contact us to confirm for your size
Operating Temperature Typically -60°C to +200°C (-76°F to +392°F) — contact us to confirm
Activation Method Heat gun or hot air station (open flame not recommended)
Wall Thickness (standard) See variant options; Iron Red + Thick variant has increased wall thickness
Flexibility Remains flexible after shrinking; does not become rigid
Moisture Resistance Yes — silicone base resists water and mild chemicals
UV Resistance Yes — suitable for outdoor and exposed installations
Sold As Single length per order (1m or 5m); cut-to-length from continuous roll
⚠️ Size Tip: Select a tubing diameter approximately 20–30% larger than your wire or connector's outer diameter. After shrinking, the tubing will grip the surface firmly. If you're unsure, contact us with your wire gauge and we'll recommend the right size.

❓ Frequently Asked Questions

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

Measure the outer diameter of the wire or connector you need to cover, then select a tubing diameter that is typically 20–30% larger than that measurement. For example, a 3mm (≈1/8") wire generally works well with φ4mm tubing. After heat is applied, the tubing shrinks to grip the surface firmly. If you're working in inches, a quick reference: φ5mm ≈ 3/16", φ10mm ≈ 3/8", φ20mm ≈ 3/4", φ40mm ≈ 1-9/16".

What is the shrink ratio, and how much will the tubing reduce in size?

Silicone heat shrink tubing generally has a 2:1 shrink ratio, meaning it shrinks to approximately half its original inner diameter when heat is applied. So φ10mm tubing will typically shrink down to approximately φ5mm after activation. The wall thickness increases proportionally as the diameter reduces. Contact us to confirm the exact ratio for your selected size before use.

Can this tubing be used outdoors or in wet environments?

Silicone rubber is inherently resistant to moisture, UV exposure, and mild chemicals, making it generally suitable for outdoor cable protection, garden lighting wiring, and damp-environment installations. For fully submersed or marine applications, verify the specific IP rating requirements of your project and contact us to confirm suitability.

What temperature range can this silicone heat shrink tubing handle?

Silicone rubber typically withstands continuous operating temperatures from approximately -60°C (-76°F) to +200°C (+392°F). This makes it suitable for automotive engine bay wiring, industrial control panel cables, and high-heat DIY applications where standard PVC heat shrink would soften or crack. Contact us to confirm the exact rating for your chosen diameter.

Is this tubing compatible with a standard heat gun?

Yes. A standard heat gun set to approximately 150–200°C (300–390°F) is typically sufficient to activate the shrink. Move the heat gun slowly and evenly along the length of the tubing to avoid hot spots. Avoid open flames, as uneven heat can cause uneven shrinkage or surface damage to the silicone.

Does the color affect the electrical insulation performance?

No. The color is a pigment added to the silicone compound and does not affect the dielectric or insulation properties of the tubing. All color variants in this listing share the same base silicone material. This means you can use color-coded heat shrink tubing for wire identification without any trade-off in insulation quality.

Can I cut this tubing to a custom length?

Yes. Both the 1-meter and 5-meter lengths can be cut with standard scissors or a utility knife. Cut ends remain clean and do not fray — a key advantage of silicone over braided or PVC alternatives. This makes it easy to cut exact segments for each wire in a harness without waste.

What is the difference between the standard and "Iron Red + Thick" variant?

The "Iron Red + Thick" variant uses the same silicone rubber material in the same iron red color, but with an increased wall thickness compared to the standard Iron Red option. Thicker walls provide additional mechanical protection and abrasion resistance, which is useful for cables in high-wear environments such as cable trays, conduit entry points, or robotic arm wiring. Contact us to confirm the exact wall thickness before ordering.

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

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