The inside diameter of shrink tubing depends on the outside diameter of the substrate onto which you will be shrinking. In our catalogue, we provide expanded inside diameters and recovered inside diameters for your referral. Choose an expanded size that fits over your substrate and it will shrink down with heat to more than the substrate outside diameter for a snug fit. Shrink ratios are available in 2:1, 3:1, and custom ratios. For a thinner recovered tube wall thickness, choose an expanded size that just slips over the substrate.

2. Why does my heat shrink tubing look too big for the application?

Before shrink tubing is heated, it may be 2 or even 3 times the diameter that it will become after heating. If sized correctly the tubing will shrink down to a snug fit. If the tubing is still too loose then either it was sized incorrectly or it has not been exposed to enough heat to maximize shrinkage.

3. What specifications do your products meet?

Many of our products have been tested to UL/CSA, ASTM, VG, Military and DEP specifications. If you need a certain specification, please call us and ask.

4. Can you provide a product if I provide you with a competitor's name or part number?

Yes. We maintain a reference guide that contains most of the major tubing manufacturers.

5. Can you colour match?

Yes we can. We will match colours from a Pantone number or a swatch

6. Do shrink sleeve have a shelf life?

Yes, however most polymers, if stored properly, will last for years. Cool, dry conditions, away from sunlight, are the best conditions for heat shrink tubing to be stored. Each polymer has a different shelf life, please contact us for more information.