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home > Heat Shrink Tube 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation, All Sizes & Colors > Heat Shrink Tube 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation, All Sizes & Colors

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Heat Shrink Tube 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation, All Sizes & ColorsHeat Shrink Tube 2: 1 Reliable Electrical Wire Insulation for Every Project Whether you're rewiring a vehicle, repairing a frayed cable, or organizing a control panel, exposed wire connections are a safety hazard and a reliability risk. This heat shrink tube 2: 1 ratio electrical sleeving gives hobbyists, auto technicians, electricians, and electronics builders a clean, durable way to insulate, protect, and identify wiring without the mess of tape or

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Heat Shrink Tube 2:1 — Reliable Electrical Wire Insulation for Every Project

Whether you're rewiring a vehicle, repairing a frayed cable, or organizing a control panel, exposed wire connections are a safety hazard and a reliability risk. This heat shrink tube 2:1 ratio electrical sleeving gives hobbyists, auto technicians, electricians, and electronics builders a clean, durable way to insulate, protect, and identify wiring — without the mess of tape or the bulk of conduit.

Each listing covers 1 meter of tubing per order, available in diameters from φ0.6mm (≈0.024") up to φ210mm (≈8.27"), and in seven colors: Black, White, Red, Green, Yellow, Blue, and Clear. The tubing is made from polyolefin, a flame-retardant thermoplastic that shrinks to approximately half its supplied inner diameter when heat is applied — no adhesives, no tools beyond a heat gun.

Typical use cases include automotive wiring harness repair, soldered joint protection on PCBs and electronics, color-coded cable labeling in server racks and control boxes, and strain relief on power tool cords. The wide size range makes this a go-to for both fine gauge wire insulation (φ0.6mm–φ3mm) and large cable bundling or pipe protection (φ60mm–φ210mm).

🔌 Compatibility: Fits standard round wire, cables, connectors, and terminals. Select the diameter closest to — but larger than — your wire or connector's outer diameter. The 2:1 shrink ratio means the recovered size will be approximately half the listed diameter. For unusual shapes or tight tolerances, contact us to confirm fit.

✅ Key Features of These Heat Shrink Tubes

🔥2:1 Shrink Ratio — Shrinks to approximately half its inner diameter when heated, creating a snug, form-fitting seal around wire insulation and connectors without gaps or loose ends.
🛡️Flame-Retardant Polyolefin — Made from a self-extinguishing thermoplastic that resists ignition and slows flame spread, making it suitable for automotive wiring harness repair and electrical panel work.
📏Wide Size Range (φ0.6mm–φ210mm) — One product line covers everything from fine gauge wire sleeving on PCB leads to large-diameter cable bundling and pipe protection, eliminating the need for multiple suppliers.
🎨7 Color Options for Easy Identification — Black, White, Red, Green, Yellow, Blue, and Clear allow color-coded wiring organization in control panels, server racks, and automotive looms — a standard practice in professional electrical work.
⚡Electrical Insulation & Moisture Resistance — Provides a protective barrier against moisture, dust, and abrasion on soldered joints, terminal connections, and exposed conductors in low-voltage applications.
✂️Cut-to-Length Flexibility — Supplied in 1-meter lengths that can be cut to any size before shrinking, giving you precise coverage for short solder joints or longer cable runs without waste.

📐 Technical Specifications — Heat Shrink Tubing 2:1

Material	Polyolefin (flame-retardant)
Shrink Ratio	2:1
Available Diameters	φ0.6mm – φ210mm (see variant options)
Available Colors	Black, White, Red, Green, Yellow, Blue, Clear
Length per Order	1 Meter
Shrink Temperature	Typically 90–120°C (194–248°F)
Operating Temperature	Typically -55°C to +125°C (-67°F to +257°F)
Voltage Rating	See variant options / Contact us to confirm
Wall Thickness (recovered)	See variant options
Application	Wire insulation, cable bundling, connector protection, strain relief

⚠️ Size Selection Note: Always measure your wire or connector's outer diameter before ordering. The listed diameter is the supplied (pre-shrink) inner diameter. After shrinking, the tube will recover to approximately half that size. If you are unsure, order one size up or contact us before purchasing.

❓ Frequently Asked Questions

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

Measure the outer diameter of the wire or connector you need to cover, then select a tube whose inner diameter is slightly larger than that measurement. Because this tubing has a 2:1 shrink ratio, the recovered diameter will be approximately half the supplied diameter. For example, a φ6mm tube will shrink down to roughly 3mm. When in doubt, size up one step.

What does '2:1 shrink ratio' mean?

A 2:1 ratio means the tubing will shrink to approximately half its original inner diameter when heat is applied. For example, a φ10mm tube will typically recover to around 5mm. This ratio is the most common for general-purpose electrical insulation and wire bundling.

How much heat is needed to shrink the tubing?

Generally, a heat gun set to around 90–120°C (194–248°F) is sufficient to activate the shrink. A lighter or match can work in a pinch, but a heat gun provides more even, controlled shrinkage. Avoid direct flame contact, which can scorch or damage the tubing.

Is this heat shrink tubing suitable for outdoor or automotive use?

This tubing is generally suitable for indoor electrical work, automotive wiring harnesses, and light outdoor applications. For harsh outdoor environments with prolonged UV or moisture exposure, we recommend confirming suitability with us before ordering, as adhesive-lined or heavy-wall variants may be more appropriate.

What is the voltage rating and temperature range of this tubing?

This tubing is typically rated for low-voltage applications (generally up to 600V) and operates across a temperature range of approximately -55°C to +125°C (-67°F to +257°F). Please contact us to confirm specifications for your specific application.

Can I use this tubing to bundle multiple wires together?

Yes. Larger diameter sizes (φ20mm and above) are well suited for bundling multiple wires or cable looms. Choose a diameter that, when shrunk, will hold the bundle snugly without excessive compression.

Does the color affect performance?

No — all color options share the same electrical and mechanical properties. Color is used for identification, organization, and aesthetics. For example, red and black are commonly used for positive and negative leads, while clear allows the underlying wire or label to remain visible.

How do I convert millimeter sizes to inches?

Divide the millimeter value by 25.4 to get inches. For example: φ6mm ≈ 0.24" (about 1/4"), φ10mm ≈ 0.39" (about 3/8"), φ25mm ≈ 0.98" (about 1"). Use this as a guide when matching to AWG wire gauges or imperial connector sizes.

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

Heat Shrink Tube 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation, All Sizes & Colors

Name: Heat Shrink Tube 2:1 Ratio – Electrical Wire Sleeving & Cable Insulation, All Sizes & Colors
Brand: www.animationjamaica.com
SKU: 44373119964
Price: 168.00 USD
Availability: InStock
Rating: 4.6111 (1151 reviews)