31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors
31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors
31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors
31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors
31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors
31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors
31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors
31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors
31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors
31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors
31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors
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31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors

31mm PVC Heat Shrink Tubing – Battery Sleeve & Wire Wrap Protector, 8 Colors

HomeDIYer
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By HomeDIYer®

Price:
$6.47 USD
Stock:
In stock (500 units), ready to be shipped

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Description

31mm PVC Heat Shrink Tubing — Reliable Battery Sleeve & Wire Protection for DIY Builds

Whether you're rebuilding a battery pack, organizing a wiring harness, or protecting exposed conductors on a DIY electronics project, finding tubing that fits cleanly and shrinks evenly makes all the difference. Loose sleeves that slide off or tubing that splits under heat can leave your work looking unfinished — and your components unprotected. This 31mm PVC heat shrink tubing is designed for makers, hobbyists, and small-shop technicians who need a dependable, easy-to-apply solution across a range of project sizes.

Each order is sold by the meter in your chosen length (1m, 5m, 10m, 20m, 50m, 100m, or 200m) and comes in 8 color options: Black, White, Yellow, Green, Blue, Red, Transparent, and Silver Grey. The tubing is made from PVC (polyvinyl chloride) with a flat-width of 31mm (≈1.22"), which shrinks down to approximately 15–16mm in diameter at a typical 2:1 ratio when heat is applied. It is lightweight, flexible before shrinking, and cuts cleanly with scissors or a utility knife.

Typical use cases include wrapping multi-cell 18650 or 21700 battery packs for e-bikes and power tools, bundling and color-coding wire harnesses in automotive or marine builds, and insulating solder joints or terminal connections in low-voltage DIY electronics. The wide color selection makes it especially useful for color-coded wiring systems where quick visual identification matters.

🔌 Compatibility Note: This tubing has a 31mm flat-width and a typical 2:1 shrink ratio, making it suitable for battery packs, wire bundles, and cylindrical components in the ~15–30mm diameter range. Check your component diameter before ordering.

✅ Key Features of These 31mm PVC Heat Shrink Tubes

  • 🎨8 Color Options — Available in Black, White, Yellow, Green, Blue, Red, Transparent, and Silver Grey for easy color-coded wire identification and a clean finished look.
  • 📏7 Length Options — Choose from 1m up to 200m so you buy exactly what your project needs, whether it's a single repair or a bulk production run.
  • 🔥Even Heat Shrinkage — PVC material shrinks uniformly around the component when heat is applied, conforming closely to irregular shapes and providing a snug, professional-looking wrap.
  • ⚡Low-Voltage Insulation — Provides electrical insulation for low-voltage wiring applications, helping protect solder joints, terminals, and exposed conductors from accidental contact and short circuits.
  • ✂️Easy to Cut and Apply — Flexible and soft before shrinking, this tubing cuts cleanly with scissors or a utility knife and slides easily over components before heat is applied — no special tools required beyond a heat gun.
  • 🔋Battery Pack Compatible — The 31mm flat-width is a commonly used size for wrapping multi-cell 18650 battery pack assemblies used in e-bikes, power banks, and DIY power tool rebuilds.

📐 Technical Specifications — PVC Heat Shrink Tubing

Material PVC (Polyvinyl Chloride)
Flat Width 31mm (≈1.22")
Shrink Ratio Typically 2:1
Shrunk Diameter (approx.) ~15–16mm (≈0.59–0.63")
Shrink Temperature Typically 90–120°C (194–248°F)
Voltage Rating Generally up to 600V (low-voltage use)
Available Colors Black, White, Yellow, Green, Blue, Red, Transparent, Silver Grey
Available Lengths 1m, 5m, 10m, 20m, 50m, 100m, 200m
Wall Thickness (before shrink) See variant options
Flexibility Flexible before shrinking; rigid after
Application Tool Heat gun recommended
Sold As Continuous length per order (cut-to-length)
⚠️ Spec Confirmation: Wall thickness and exact shrink temperature may vary by color batch. If your application has tight tolerances, contact us to confirm before ordering.

❓ Frequently Asked Questions

What length of heat shrink tubing do I need?

Measure the total length of wire, battery, or component you need to cover, then add 10–15% extra for overlap and trimming. For example, a 10-cell 18650 battery pack typically needs around 200–250mm (≈8–10") of tubing per pack. We offer lengths from 1 Meter up to 200 Meters so you can buy exactly what your project requires.

What is the shrink ratio of this PVC tubing?

PVC heat shrink tubing generally has a 2:1 shrink ratio, meaning the 31mm flat-width tube will shrink down to approximately 15–16mm in diameter when heat is applied. This makes it well-suited for battery packs, wire bundles, and cylindrical components in that size range.

Can this tubing be used outdoors or in wet environments?

PVC heat shrink tubing provides a degree of moisture resistance and is generally suitable for light indoor and semi-protected outdoor use. For fully waterproof or submersion applications, we recommend using adhesive-lined (dual-wall) heat shrink tubing instead. Contact us to confirm suitability for your specific environment.

What tool do I use to shrink this tubing?

A heat gun is the most reliable tool for even shrinkage. In a pinch, a lighter or hair dryer can work for small sections, but a heat gun gives the most consistent results. PVC tubing typically activates at around 90–120°C (194–248°F). Avoid direct flame contact to prevent scorching.

Is this tubing compatible with 18650 or 21700 battery cells?

Yes. The 31mm flat-width size is commonly used for wrapping 18650 battery packs (multi-cell configurations) and similar cylindrical battery assemblies. For single 18650 cells, a smaller diameter tubing is typically used. If you are unsure, contact us to confirm the fit for your specific battery configuration.

How do I choose the right color for my project?

Color choice is generally for identification and aesthetics. In electrical work, color coding helps distinguish wire gauges, polarity, or circuit types at a glance. Black and transparent are the most popular for general use, while red, blue, green, and yellow are commonly used for color-coded wiring systems.

What is the voltage rating of this PVC heat shrink tubing?

PVC heat shrink tubing is generally rated for low-voltage applications, typically up to 600V. For high-voltage or industrial electrical insulation, please contact us to confirm the specification meets your requirements before ordering.

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

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