What is the shrink ratio of this tubing?

PVC heat shrink tubing of this type typically has a shrink ratio of approximately 2:1, meaning it shrinks to roughly half its original flat width when heat is applied. Actual recovery depends on the specific color and wall thickness, so we recommend testing a short piece before committing to a full run.

PVC Heat Shrink Tubing 27 - 43mm – Colorful Insulation Sleeve for Wire & Cable - HomeDIYer

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PVC Heat Shrink Tubing 27-43mm – Colorful Insulation Sleeve for Wire & Cable

HomeDIYer

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Sizes: 27mm

Colors: Black

Length (M): 1 M

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$6.34 USD

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PVC Heat Shrink Tubing 27–43mm — Reliable Insulation for Every Wire & Cable Project

Whether you're rewiring a car stereo, building a battery pack, or tidying up a tangled workshop bench, loose wire ends and exposed connections are a constant headache. This PVC heat shrink tubing gives hobbyists, electricians, and DIY enthusiasts a fast, clean way to insulate, protect, and color-code cables of all sizes — no tape, no mess, no guesswork.

Each listing covers a single continuous length of PVC heat shrink tubing in your chosen flat width (27mm / 31mm / 36mm / 40mm / 43mm) and length (1 M ≈ 3.3 ft, 2 M ≈ 6.6 ft, 5 M ≈ 16.4 ft, or 10 M ≈ 32.8 ft). The tubing is made from flexible PVC with a typical 2:1 shrink ratio, meaning it recovers to roughly half its flat width when heat is applied. Available in 13 colors — Black, White, Yellow, Green, Blue, Purple, Transparent, Grey, Red, Grass Green, Fruit Green, Pink, and Orange — so you can color-code circuits at a glance.

Typical use cases include wire harness insulation for automotive and marine wiring, battery pack wrapping for RC cars and power tools, connector and terminal protection in home electrical DIY projects, and cable bundling for clean desk setups and server racks. The wide flat-width range makes this colorful shrinkable film a go-to for both small gauge wires and larger cable bundles.

🔌 Compatible with: Round cables, wire bundles, battery terminals, connectors, and tubing with an outer diameter that fits within the chosen flat width. Flat width 27mm typically suits cables up to ~15mm OD; 43mm suits cables up to ~25mm OD. Confirm your cable diameter before ordering.

✅ Key Features of These PVC Heat Shrink Tubing Insulation Sleeves

🎨 13 Color Options — From classic Black and White to vibrant Red, Blue, and Pink, each color makes wire identification and circuit color-coding straightforward on any project.
📏 5 Flat-Width Sizes — Choose from 27mm (≈1.06"), 31mm (≈1.22"), 36mm (≈1.42"), 40mm (≈1.57"), or 43mm (≈1.69") to match cables ranging from medium single conductors to large multi-wire bundles.
🔥 Low Activation Temperature — Shrinks reliably at approximately 70–90°C (158–194°F), so a standard heat gun, hair dryer, or lighter is all you need — no specialized equipment required.
🛡️ Electrical Insulation & Moisture Resistance — The PVC wall provides a protective barrier against accidental shorts, abrasion, and light moisture exposure, keeping connections secure in typical indoor and sheltered environments.
✂️ Cut-to-Length Flexibility — Available in 1 M, 2 M, 5 M, and 10 M continuous rolls so you can cut exactly what you need for each connection — no waste, no leftover scraps cluttering your toolbox.
⚡ Versatile DIY & Professional Use — Suited for automotive wiring repairs, RC battery pack insulation, home electrical DIY projects, and cable management in workshops and server rooms.

📐 Technical Specifications — PVC Heat Shrink Tubing Insulation Sleeve

Material	PVC (Polyvinyl Chloride)
Available Flat Widths	27mm (≈1.06"), 31mm (≈1.22"), 36mm (≈1.42"), 40mm (≈1.57"), 43mm (≈1.69")
Available Lengths	1 M (≈3.3 ft), 2 M (≈6.6 ft), 5 M (≈16.4 ft), 10 M (≈32.8 ft)
Shrink Ratio	Typically 2:1
Activation Temperature	Typically 70–90°C (158–194°F)
Voltage Rating	Typically up to 600V AC (low-voltage applications)
Colors Available	Black, White, Yellow, Green, Blue, Purple, Transparent, Grey, Red, Grass Green, Fruit Green, Pink, Orange
Wall Thickness (before shrink)	See variant options
Recovered Inner Diameter	See variant options / Contact us to confirm
Suitable Cable OD (approx.)	27mm → up to ~15mm OD; 43mm → up to ~25mm OD
Application Method	Heat gun, hair dryer, or open flame (held at safe distance)
Indoor / Outdoor Use	Indoor & sheltered outdoor (not rated for continuous submersion)

⚠️ Size tip: Measure your cable's outer diameter before ordering. The flat width should be approximately 1.2–1.5× your cable's OD for a snug, professional fit after shrinking.

❓ Frequently Asked Questions

How do I choose the right flat width size for my wire or cable?

Measure the outer diameter of your cable or bundle, then choose a flat width that is roughly 1.2–1.5× that diameter. For example, a cable with a 15mm (≈0.59") diameter would generally work well with the 27mm flat-width tubing. When in doubt, size up — you can always apply more heat to shrink it tighter, but you cannot stretch it larger. If you're unsure, feel free to contact us with your cable specs.

What temperature is needed to shrink this PVC tubing?

This PVC heat shrink tubing typically activates at around 70–90°C (158–194°F). A standard heat gun on a low setting, a hair dryer on high, or a lighter held at a safe distance will generally work. Move the heat source continuously and evenly along the tubing to avoid scorching or uneven shrinkage.

What is the shrink ratio, and how much will it shrink?

The typical shrink ratio is approximately 2:1, meaning the tubing recovers to roughly half its original flat width when fully heated. For example, the 27mm flat-width tubing will generally shrink down to approximately 13–14mm in diameter. We recommend testing a short piece on your specific cable before cutting your full length.

Is this tubing safe for outdoor or wet environments?

Standard PVC heat shrink tubing provides basic moisture resistance and is suitable for light indoor and sheltered outdoor use. It is not rated for continuous submersion or prolonged direct UV exposure. For harsh outdoor, marine, or underground applications, we recommend adhesive-lined polyolefin tubing, which provides a waterproof seal.

What voltage rating does this insulation sleeve carry?

PVC heat shrink tubing of this type is generally rated for low-voltage applications, typically up to 600V AC. It is well-suited for automotive wiring, household appliance repairs, and DIY electronics. Always verify the voltage requirements of your specific project and consult a qualified electrician for high-voltage or safety-critical installations.

Can I use this for battery pack insulation or RC car projects?

Absolutely. This colorful PVC heat shrink tubing is widely used for battery pack wrapping, wire harness color-coding, connector insulation, and general DIY electronics. The wide range of colors makes it easy to organize and identify different circuits — a popular choice for RC car builders, e-bike battery packs, and custom power supply projects.

Which size should I choose for bundling multiple wires together?

Measure the total outer diameter of the bundled wires, then select a flat width that is at least 1.3× that measurement. For a bundle measuring around 20mm (≈0.79") across, the 36mm or 40mm flat-width option would generally be a good starting point. If you're bundling an unusually large or irregular group of cables, contact us and we'll help you find the right fit.

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

PVC Heat Shrink Tubing 27-43mm – Colorful Insulation Sleeve for Wire & Cable

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Beschreibung

PVC Heat Shrink Tubing 27–43mm — Reliable Insulation for Every Wire & Cable Project

✅ Key Features of These PVC Heat Shrink Tubing Insulation Sleeves

📐 Technical Specifications — PVC Heat Shrink Tubing Insulation Sleeve

❓ Frequently Asked Questions

PVC Heat Shrink Tubing 27-43mm – Colorful Insulation Sleeve for Wire & Cable

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