43mm PVC Heat Shrink Tubing for Battery Packs — 13 Colors, 1–50 Meter Rolls

Measure the total length of the battery pack or object you need to cover, then add at least 10–15% extra to account for shrinkage and overlap at the ends. For example, a 200mm (≈7.9") battery pack would typically need at least 220–230mm of tubing before shrinking. For ongoing workshop use, a longer roll (10m or 20m) gives you flexibility without repeated reordering.

This tubing has a flat width of 43mm, which corresponds to a pre-shrink diameter of approximately 27mm (≈1.06"). PVC heat shrink generally has a shrink ratio of around 2:1, so it will conform tightly to objects with a finished diameter of roughly 13–20mm depending on wall thickness and the amount of heat applied. If your component is near the upper end of that range, confirm fit before committing to a large roll.

PVC heat shrink tubing is generally suitable for indoor and light outdoor use. It typically withstands service temperatures up to around 60–80°C (140–176°F). For applications involving prolonged UV exposure, engine-bay heat, or temperatures above that range, a polyolefin-based tubing is generally a better fit. Contact us to confirm suitability for your specific environment.

Yes. The 43mm flat width is a commonly used size for wrapping multi-cell 18650 battery packs and similar cylindrical battery assemblies used in e-bikes, power tools, and DIY energy storage projects. It provides a snug, protective sleeve that helps insulate and visually identify cells by color — a useful feature when building or servicing packs with multiple cell groups.

A heat gun is the recommended tool for even, controlled shrinking. Set it to a medium heat setting and move it steadily along the length of the tubing rather than holding it in one spot. A lighter can work for very short sections in a pinch, but risks uneven shrinkage or scorching. A hair dryer generally does not produce enough heat for reliable results with PVC tubing.

For a single battery pack repair or one-off project, a 1m or 3m roll is typically sufficient. For a workshop setting where you wrap battery packs regularly, the 10m or 20m roll offers better value per meter. The 30m and 50m rolls are suited for production use or bulk DIY builds where you need consistent color across many units.

Yes. With 13 color options available, this tubing is well suited for color-coding wire bundles in automotive, marine, and electronics wiring projects. The transparent variant is useful when you want to protect a wire or label while keeping it visible. In most cases, the tubing can be applied over existing insulation as an outer sleeve for identification purposes.