Measure the circumference of your battery pack and divide by 2 to get the required flat width. For example, a pack with a 50mm circumference needs approximately a 25mm flat-width tube. When in doubt, size up slightly — PVC shrink tubing typically shrinks to about 50% of its flat width when heated. Each listing shows both the flat width and the recovered inner diameter (Φ) to help you match your pack.

This tubing is generally rated at a 2:1 shrink ratio, meaning it shrinks to approximately half its original flat width when heat is applied. The recovered inner diameter (Φ) listed in each variant reflects the expected post-shrink diameter.

Yes. This PVC heat shrink tubing is commonly used to wrap LiPo, NiMH, and NiCd RC battery packs. It provides a snug, protective sleeve that holds cells together and protects against minor abrasion and moisture exposure during normal RC use.

A heat gun is recommended for even, controlled shrinking. A hair dryer can work for smaller diameters but may not generate enough heat for larger sizes. Apply heat evenly and avoid holding the heat source in one spot to prevent uneven shrinkage or scorching.

PVC heat shrink tubing generally provides basic moisture resistance once shrunk, making it suitable for light outdoor use in RC applications. However, it is not a waterproof seal — for fully waterproof applications, adhesive-lined (dual-wall) heat shrink tubing is recommended instead.

PVC heat shrink tubing of this type is typically suitable for low-voltage RC battery applications (generally under 60V DC). If you have specific electrical insulation requirements, please contact us to confirm the exact rating for the size you need.

Yes. Each piece is sold in 1m (approximately 39.4") lengths and can be cut to any shorter length with scissors or a utility knife before or after shrinking. This makes it easy to wrap individual cells or shorter sub-packs from a single piece.