Heat Shrink Tubing Kit | 3:1 Polyolefin Insulation | 2.4-25.4mm Diameter | 10-100 Meter

This 3:1 polyolefin heat shrink tubing provides a durable, insulated seal for wires from 2.4mm to 25.4mm in diameter. The 3:1 shrink ratio ensures a tight, conformal fit, while the flame-retardant pol...
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Questions about this product
- What wire sizes does this heat shrink tubing fit?
- It covers a wide range, from 2.4mm up to 25.4mm pre-shrink inner diameter. With the 3:1 shrink ratio, each piece tightens down to about a third of that size. So one kit handles small connectors right up to thick cable bundles and terminals.
- How hot does it need to get to shrink properly?
- It starts shrinking around 80C and reaches full recovery at 120C. A heat gun is the easiest way to hit that evenly. Keep the heat moving so the tubing shrinks smoothly without scorching one spot.
- Can I use this tubing outdoors or in an engine bay?
- Yes. The flame-retardant polyolefin resists abrasion, UV, moisture, and common solvents and oils. It runs from -55C to +125C, so it holds up in automotive and outdoor wiring. It seals against corrosion long term too.
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