1M/5M PVC Heat Shrink Tube 18650 Battery 29.5mm Flat 18.5mm Round

  • $7.40
    Unit price per 
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  • 1 Metre or 5 Metres. Choose colour and length above
  • PVC Heat Shrink Tubing For 18650 Battery Holder.
  • Durable design.
  • Colours Black/Clear/Blue/Green/Red/Yellow/Orange/White.
  • Shrinking temperature: 80 deg.
  • Shrinkage ratio: 48%.
  • Flat width: 29.5mm (before shrinkage).
  • Round diameter: 18.5mm approx.
  • Wall thickness: 0.1mm (before shrinkage).
  • Note: If you buy the last 1m of black you will receive 97cm instead of 100cm.
  • Note: We may choose to send the heat shrink flattened instead of in a roll.
  • Note: most images show 5 metres.


How to choose the size

  • If you want to convert flat width to round width, multiply flat width by 2/pi.
  • If you have a battery pack to cover that is say 10cm x 15cm rectangular, you can paste the following into Google... pi*sqrt((10/2)^2+(15/2)^2)). This gives a flat width that you need of 28 cm (280mm). So, simply replace 10 and 15 in the formula with your width and height and paste into Google. This formula will calculate the rectangle to exactly fit within the round shape of the end of the tube (corners of rectangle touching the circular end of the heat shrink). This means that slightly smaller should be okay because you can manipulate the shape of the heat shrink (make it more like a rectangular shape to get it over the battery pack). You can use much larger heat shrink because of the large shrinkage ratio of PVC heat shrink. Slowly apply heat due to the low melting temperature of PVC.

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