PVC Heat Shrink Tubing — Black, Blue & Clear | 7mm to 500mm Flat Width | 1M to 10M

Measure the outer diameter of the object you need to cover, then select a flat width whose Φ (inner diameter) value is slightly larger than that measurement. For example, a wire bundle with a 10mm OD fits well under a 15mm flat-width tube (Φ9mm — size up one step to Φ10.8mm for a comfortable slide-on fit). Length options are 1M (≈39"), 2M (≈79"), 5M (≈197"), and 10M (≈393") — choose based on how many pieces you need to cover.

PVC heat shrink tubing generally has a 2:1 shrink ratio, meaning it shrinks to approximately half its original flat width when heat is applied. The inner diameter (Φ) listed in each variant name is the pre-shrink diameter — after shrinking, the tubing will conform tightly to your component. Always verify the Φ value matches your component's OD before ordering.

A heat gun set to 90–120°C (194–248°F) is the most reliable method and gives even, controlled shrinkage. A hot air station works equally well for precision work. For small diameters, a lighter can be used carefully, but avoid open flame on larger diameters as uneven heat typically causes wrinkling or incomplete shrinkage.

Standard PVC heat shrink tubing provides basic moisture resistance and is generally suitable for light outdoor or occasional moisture exposure. However, it is not waterproof or UV-stabilized. For prolonged outdoor exposure, submersion, or direct sunlight applications, adhesive-lined polyolefin tubing is typically a better choice.

PVC heat shrink tubing of this type is typically rated for low-voltage applications up to 600V. It is commonly used for wire insulation, terminal covers, and battery pack wrapping in consumer electronics and RC applications. Confirm your specific voltage and regulatory requirements before use in industrial or high-voltage environments.

Yes — this is one of the most common applications. To select the right size, measure your battery pack's circumference, divide by π (≈3.14) to get the OD, then choose a flat width whose Φ value is 5–15% larger than that OD. The Blue variant is popular for color-coding cell groups, while Black gives a clean finished look. Larger flat widths (36mm–500mm) are designed for multi-cell packs used in RC cars, boats, planes, and drones.

The formula is: Inner Diameter (Φ) = Flat Width × 2 ÷ π. However, each variant in this listing already shows the pre-shrink Φ value directly in the size name (e.g., "15mm (Φ9mm)"), so you can match it to your component's OD without doing the math yourself.

Thickened variants have a greater wall thickness than the standard version. After shrinking, they provide improved abrasion resistance, a firmer mechanical grip, and slightly better insulation. They are generally preferred for RC battery packs, heavy cable bundles, or any application where the tubing may experience physical stress. Standard wall variants are lighter and easier to slide over components before shrinking.