PVC Heat Shrink Tubing – Flat Width 80mm to 103mm, 10 Colors

The flat width is the measurement of the tubing when it is laid flat before shrinking. To find the right size, measure the outer diameter of your cable bundle, then choose a flat width that is approximately 1.2–1.5× that diameter. For example, a bundle that is 50mm in diameter would generally work well with an 80mm flat width tubing. When in doubt, order a single piece first to test the fit before purchasing a larger pack.

PVC heat shrink tubing typically has a 2:1 shrink ratio, meaning it shrinks to approximately half its original diameter when heat is applied. So an 80mm flat width tube would shrink down to roughly 40mm flat width after heating. The exact ratio may vary slightly by size — contact us to confirm for your specific width before ordering.

This PVC tubing generally begins to shrink at around 70–90°C (158–194°F). A standard heat gun set to low or medium heat is the recommended tool. Move the heat gun slowly and evenly along the tubing to avoid hot spots. Avoid using open flames such as lighters or torches, as these can scorch or melt the material unevenly and create weak spots in the sleeve.

Standard PVC heat shrink tubing provides basic moisture resistance and is suitable for light indoor and sheltered outdoor use. However, it is not fully waterproof and is not UV-stabilized for prolonged direct sunlight exposure. For harsh outdoor, marine, or underground applications, we recommend using adhesive-lined polyolefin heat shrink tubing, which provides a watertight seal. Contact us if you need guidance on the right product for your environment.

Yes, PVC heat shrink tubing is commonly used for electrical wire insulation, terminal protection, splice covering, and cable management. It provides a snug, insulating sleeve once shrunk. The voltage rating varies by size and wall thickness — please contact us with your specific size and application requirements so we can confirm the rating before you order for high-voltage or safety-critical applications.

If you are trying this product for the first time or need to verify the fit on your specific cable bundle, ordering a single piece (1 Pcs) is a cost-effective way to test before committing. If you have an ongoing project — such as wiring a vehicle, building battery packs, or managing cables in a workshop — packs of 10, 20, or 30 pieces offer better value per piece and ensure you have enough material on hand without repeated reordering.

Each size is designed to fit a different range of cable bundle diameters. As a general guide: 80mm flat width typically fits bundles up to ~50mm diameter; 83mm fits up to ~52mm; 85mm fits up to ~54mm; 91mm fits up to ~58mm; 95mm fits up to ~60mm; and 103mm fits up to ~65mm. These are approximate values based on a typical 2:1 shrink ratio. Always measure your bundle and test with a single piece if you are between sizes.