Wellele

    • Polyolefin vs PVC Heat Shrink Tubing

    Polyolefin and PVC heat-shrink tubes side by side: flexible higher-temperature polyolefin versus rigid low-cost PVC

    Polyolefin and PVC are the two most specified heat shrink polymers. They are not interchangeable; the difference shows up in temperature, flexibility and flame behaviour.

    Polyolefin

    Polyolefin (cross-linked PE) is flexible, has strong dielectric properties and a wide temperature range. It is the default for general insulation and harness work, and is available halogen-free for enclosed or transit use.

    PVC

    PVC shrink is economical, glossy and easy to print, but has a lower temperature ceiling and softer wall. It suits light-duty marking and consumer-grade bundling.

    How to decide

    If the part sees heat, flexing or electrical stress, spec polyolefin. If it is a static, low-temperature marking sleeve, PVC is fine and cheaper. Compare the full polymer set under products by material.

    Wellele products in this guide

    Wellele supplies the products behind this guide and sizes them to your cable OD, wall and voltage class. Common search terms buyers use: polyolefin vs PVC heat shrink tubing, which heat shrink to spec. For a custom run, request a quote with your drawing.

    Frequently asked questions

    Is polyolefin better than PVC?

    For electrical and thermal performance, yes. PVC wins only on cost and print finish for light duty.

    Does polyolefin come halogen-free?

    Yes, halogen-free polyolefin is stocked for rail, transit and enclosed cabinets.

    Which has the higher temperature rating?

    Polyolefin, by a wide margin over PVC.