PVC Heat Shrink Tubing for Battery Wraps & Wire Insulation – 160mm to 235mm, Multiple Colors & Lengths

Measure the outer diameter of your battery pack or bundle before shrinking. PVC heat shrink tubing typically shrinks to about 50% of its listed diameter. For example, a 160mm tube will shrink down to roughly 80mm — the listed inner diameter (Ø102mm) reflects the post-shrink fit. Always choose a size slightly larger than your object's diameter to allow easy insertion, then apply heat for a snug fit. If you're between sizes, size up.

A heat gun is generally recommended for large-diameter PVC heat shrink tubing. Apply heat evenly around the tube, moving the gun continuously to avoid scorching. A standard heat gun set to approximately 90–120°C typically works well. Avoid open flames, as they can cause uneven shrinkage or damage the material.

Standard PVC heat shrink tubing provides basic moisture resistance and is suitable for indoor and light outdoor use. It is not a fully waterproof or adhesive-lined product. For applications requiring a watertight seal — such as marine wiring or outdoor junction boxes — we recommend using dual-wall adhesive-lined heat shrink tubing instead.

This PVC heat shrink tubing generally has a 2:1 shrink ratio, meaning it shrinks to approximately half its original diameter when heat is applied. The listed inner diameter (Ø) for each size reflects the post-shrink dimension. For example, the 160mm (Ø102mm) size has a post-shrink inner diameter of approximately 102mm (≈4 inches). Always verify your bundle's diameter against the post-shrink Ø before ordering.

Yes. This large-diameter PVC heat shrink tubing is commonly used for wrapping multi-cell battery packs, including those built with 18650 and 21700 cells. Choose the diameter that fits loosely over your assembled pack before applying heat. The thickened variants (Blue Thicken, Clear Thicken) offer additional mechanical protection for packs that experience physical handling or vibration.

1M ≈ 3.3 ft (≈39.4 in)  |  2M ≈ 6.6 ft (≈78.7 in)  |  3M ≈ 9.8 ft (≈118 in)  |  5M ≈ 16.4 ft (≈196.9 in). Choose based on the total length of your project, and add a small buffer for trimming and alignment.

The Thicken variants (Blue Thicken, Clear Thicken) have a greater wall thickness than the standard color options, providing extra abrasion resistance and mechanical protection. They are a good choice for battery packs or cable bundles that experience physical stress, repeated handling, or installation in tight spaces. Standard variants are suitable for most general-purpose wire sleeving and insulation tasks.

Yes. PVC heat shrink tubing cuts cleanly with scissors or a utility knife before heat is applied. Cut to your desired length, slide it over your battery pack or cable bundle, then apply heat evenly. In most cases, cutting after shrinking is not recommended as the material becomes firmer.