3mm Heat Shrink Tubing Red 2:1 Polyolefin (1 pc)
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Prices updated: 13 Oct 2026
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About this product
A 3 mm polyolefin heat-shrink sleeve in red with a 2:1 shrink ratio. Used to insulate and seal small wires and joints; it shrinks to about half its original diameter when heated, and is rated for operation from -55 °C to 125 °C.
Specifications
- Diameter
- 3 mm
- Shrink ratio
- 2:1
- Material
- Polyolefin
- Color
- Red
- Operating temperature
- -55 °C to 125 °C
- Minimum shrink temperature
- 80 °C
Frequently asked questions
Which wires does a 3 mm tube fit?
Pick a tube whose unshrunk inner diameter is slightly larger than the wire or joint, then shrink it so it grips the insulation. Test on a scrap piece first.
Can I use it on a joint that will be exposed to heat?
The rated operating range is -55 °C to 125 °C. For joints in hotter environments, check the material rating of your application before use.
