PVC Heat Shrink Tubing for Battery Packs, Wire Bundles & DIY Electrical Repairs
If you've ever wrestled with a battery pack that's lost its sleeve, a solder joint that needs protection, or a wire harness that looks like a bird's nest, you know how much a reliable PVC heat shrink tubing changes the game. Whether you're a hobbyist rebuilding 18650 battery packs, an electrician tidying up cable runs, or a maker wrapping custom connectors, having the right size and color on hand makes every job cleaner and faster.
Each listing covers a single continuous length of PVC heat shrink tubing — available in flat widths from 7mm (≈9/32") to 45mm (≈1-3/4"), with recovered inner diameters from Φ4mm to Φ28mm. Lengths run from 1M (≈3.3 ft) up to 10M (≈32.8 ft). The tubing is made from flexible PVC with a 2:1 shrink ratio and is available in 11 colors including Blue, Black, White, Red, Green, Yellow, Orange, Brown, Fruit Green, Silver Gray, and Clear ("Clean").
Typical use cases include wrapping individual 18650 lithium-ion cells and battery packs, bundling multi-conductor wire harnesses for automotive or RC builds, adding color-coded strain relief to connector leads, and protecting exposed solder joints in DIY electronics projects. The wide flat-width range makes this a go-to for both fine wire work and larger battery sleeve wrap applications.
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Sizing note: Flat width = half the circumference of your battery or wire. For 18650 cells, the 18.5mm flat / Φ11.5mm variant is typically the right fit. For grouped cells or small packs, try 31mm flat / Φ20mm. When in doubt, size up — you can always trim length, but you can't stretch diameter.
✅ Key Features of These PVC Heat Shrink Tubing Sleeves
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🔥2:1 Shrink Ratio — Shrinks to approximately half its flat width when heated to 70–90°C (158–194°F), creating a snug, form-fitting wrap around battery cells, wire bundles, and connectors.
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📏Wide Size Range — Flat widths from 7mm (Φ4mm recovered) to 45mm (Φ28mm recovered) cover everything from thin signal wires to large-format battery pack sleeves in a single product line.
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🎨11 Color Options — Blue, Black, White, Red, Green, Yellow, Orange, Brown, Fruit Green, Silver Gray, and Clear let you color-code wire harnesses, label battery cells, or match your build's aesthetic.
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📦Flexible Length Selection — Choose 1M, 2M, 3M, 5M, or 10M per order so you buy exactly what your project needs — no waste on small jobs, bulk value for larger wiring runs.
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🛡️Moisture-Resistant PVC Construction — Forms a protective barrier against moisture, dust, and minor abrasion, making it suitable for battery pack rebuilds, automotive wiring, and indoor electrical enclosures.
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✂️Easy to Cut and Apply — Cuts cleanly with scissors, slides over components without adhesive, and shrinks evenly with a heat gun — no special tools or adhesives required for most DIY heat shrink tubing applications.
📐 Technical Specifications — PVC Heat Shrink Tubing
| Material |
PVC (Polyvinyl Chloride) |
| Shrink Ratio |
2:1 (approximately) |
| Flat Width Range |
7mm (≈9/32") – 45mm (≈1-3/4") |
| Recovered Inner Diameter Range |
Φ4mm (≈5/32") – Φ28mm (≈1-1/8") |
| Available Lengths |
1M (≈3.3 ft), 2M (≈6.6 ft), 3M (≈9.8 ft), 5M (≈16.4 ft), 10M (≈32.8 ft) |
| Shrink Temperature |
Typically 70–90°C (158–194°F) |
| Operating Temperature |
Typically -20°C to 105°C (-4°F to 221°F) |
| Voltage Rating |
Typically up to 600V (low-voltage applications) |
| Colors Available |
Blue, Black, White, Red, Green, Yellow, Orange, Brown, Fruit Green, Silver Gray, Clear |
| Finish |
Matte / Semi-gloss (varies by color) |
| Adhesive Lined |
No (standard PVC; not adhesive-lined) |
| Recommended Application Tool |
Heat gun (low-to-medium setting) |
| Typical Use |
Battery sleeve wrap, wire bundling, connector strain relief, solder joint protection |
| Country of Origin |
See variant options |
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Confirm your size before ordering: Measure your battery cell or wire bundle diameter, multiply by π (≈3.14) to get circumference, then divide by 2 for the required flat width. If you're between sizes, size up. Contact us if you need help selecting the right variant.
❓ Frequently Asked Questions
How do I choose the right flat width and length for my battery or wire?
Measure the circumference of your battery or wire bundle, then divide by 2 to get the required flat width. For example, a standard 18650 cell (≈18.5mm diameter) has a circumference of about 58mm, so a flat width of 18.5mm (Φ11.5mm recovered) is typically the right fit. For grouped cells or small packs, the 31mm flat (Φ20mm) variant generally works well. When in doubt, size up — PVC shrink tubing typically shrinks to about 50% of its flat width. For length, 1M–3M suits single cells or short runs; 5M–10M are ideal for bulk wiring projects.
What shrink ratio does this PVC tubing have?
This PVC heat shrink tubing generally has a 2:1 shrink ratio, meaning it shrinks to approximately half its original flat-width diameter when heat is applied. The recovered inner diameter listed in each variant (Φ4mm–Φ28mm) reflects the approximate post-shrink size. Actual recovered diameter may vary slightly depending on heat application method and duration.
Can this tubing be used outdoors or in humid environments?
PVC heat shrink tubing provides a moisture-resistant barrier suitable for indoor and sheltered outdoor use. It is not rated for continuous submersion or prolonged UV exposure. For fully waterproof or outdoor-rated applications, an adhesive-lined polyolefin tubing is generally recommended instead. For battery pack rebuilds stored indoors or in enclosures, this PVC tubing is typically sufficient.
What temperature is needed to shrink this tubing, and what tools can I use?
PVC heat shrink tubing typically activates at around 70–90°C (158–194°F). A heat gun set to low-to-medium heat works best and gives the most even, controlled shrink — especially for larger flat widths like 31mm or 45mm. A lighter can work for small diameters in a pinch, but risks scorching the tubing. A hair dryer generally does not produce enough heat to fully shrink PVC tubing.
Is this tubing compatible with lithium-ion battery packs and 18650 cells?
Yes. The 18.5mm flat width (Φ11.5mm recovered) variant is commonly used for single 18650 cells. The 31mm flat width (Φ20mm recovered) suits small battery packs or grouped cells side-by-side. Always verify the recovered diameter against your specific cell or pack dimensions before ordering. For custom pack shapes, measure the widest cross-section and size up accordingly.
What is the voltage and temperature rating of this PVC heat shrink tubing?
PVC heat shrink tubing is generally rated for low-voltage applications (typically up to 600V) and a continuous operating temperature range of approximately -20°C to 105°C (-4°F to 221°F). These are typical industry values for standard PVC shrink tubing. Contact us to confirm exact ratings if your application has specific compliance requirements.
Can I use this for wire bundling and cable management in addition to battery wrapping?
Absolutely. This tubing works well for wire bundling, cable labeling, strain relief on connectors, and protecting solder joints. The wide range of flat widths (7mm–45mm) covers everything from thin signal wires to multi-conductor cable harnesses. The 11 available colors make it easy to color-code circuits or match existing wiring conventions in automotive, RC, and DIY electronics builds.
🛒 Select your size, color, and length above, then add to cart — ships from our US warehouse.
