Heat Shrink Tube 4mm

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Detail Description

The 4mm Heat Shrink Tube is a high-quality, flexible insulation material used to protect and organize wires, terminals, and connectors. Sold per meter, this tubing provides a snug fit over small-diameter wires once heat is applied. It's made from durable, flame-retardant polyolefin material and offers excellent insulation, mechanical protection, and resistance to wear and moisture.

How It Works:

To use, cut the desired length of the tube, slide it over the target wire or connection, and apply heat using a heat gun or lighter. The tubing will shrink to approximately half its original diameter, tightly securing itself around the object for a clean, professional finish. The 4mm size refers to the internal diameter before shrinking, making it suitable for wires or bundles under 4mm.

Typical Use Cases:

Insulating and protecting small gauge wires (e.g. 20–24 AWG)
Covering solder joints or exposed leads
Wire management in Arduino and DIY electronics
Adding strain relief to connectors or terminals
Color coding or labeling wires (if available in multiple colors)

Limitations:

Shrink ratio is usually 2:1, reducing 4mm to about 2mm
Not suitable for high-temperature or high-voltage environments
Requires an external heat source for application
Limited durability in extreme outdoor conditions unless enclosed

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