0.8mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10M Lengths

The 0.8mm measurement refers to the inner diameter before shrinking. As a general rule, choose a tube whose pre-shrink ID is roughly 1.5–2× the outer diameter of the wire or connector you need to cover. For this 0.8mm tube, it is typically suited for very fine wires and leads — generally in the 0.3–0.5mm range. If you are unsure, contact us to confirm compatibility before ordering.

This tubing has a 2:1 shrink ratio, meaning it shrinks to approximately half its original inner diameter when heat is applied. Starting at φ0.8mm, the recovered inner diameter is typically around φ0.4mm. Actual results may vary slightly depending on the heat source temperature and application time.

Polyolefin heat shrink tubing generally provides good tensile strength and abrasion resistance once shrunk. It forms a snug protective sleeve that resists pulling and flexing in most low-to-medium stress applications. For high-vibration or heavy-duty environments, we recommend confirming the wall thickness and tensile rating with us before ordering.

Standard polyolefin heat shrink tubing is generally resistant to moisture, mild chemicals, and UV exposure, making it suitable for automotive wiring harnesses and light outdoor applications. For prolonged direct UV exposure or harsh chemical environments, we recommend confirming the specific material rating with us before use.

Heat shrink tubing is sized by inner diameter rather than a thread or connector standard. This 0.8mm tubing is compatible with any wire or component whose outer diameter is smaller than 0.8mm before shrinking. It works with both metric and imperial wire gauges in that size range — typically very fine signal wires, thermocouple leads, and small electronic component leads.

Slide the tubing over the wire or connection point before making the final termination where possible. Apply even heat using a heat gun — typically set to around 90°C–120°C for standard polyolefin tubing. Move the heat source steadily along the tube to shrink it evenly and avoid scorching. A lighter can work in a pinch but may produce uneven results on very fine tubing like this 0.8mm size.

Color-coded heat shrink tubing makes wire identification fast and reliable — especially in multi-wire harnesses, automotive builds, and electronics projects where tracing individual conductors matters. Using red for positive, black for negative, and other colors for signal lines reduces troubleshooting time significantly and helps meet wiring documentation standards in professional installations.