3:1 Heat Shrink Tubing 9.5mm & 25.4mm Red

Description

3:1 Heat Shrink Tubing for Wire and Cable Protection

This 3:1 heat shrink tubing is designed for electrical insulation, wire protection, cable bundling and connector sealing. With a 3:1 shrink ratio, the tubing can accommodate different cable and connector sizes while providing a secure fit after heating.

Available in 9.5mm and 25.4mm sizes, this red heat shrink tube is suitable for electronics assembly, DIY wiring, cable repair, hobby projects and general electrical work.

Key Features

• 3:1 shrink ratio for flexible size coverage
• Red heat shrink tubing for easy identification
• Starting shrink temperature: approximately 80°C
• Fully shrunk temperature: approximately 125°C
• Operating temperature: -55°C to 125°C
• Helps provide electrical insulation and mechanical protection
• Suitable for wires, cables, solder joints and connectors
• Available in 9.5mm and 25.4mm sizes

Available Sizes

Size	Before Shrink ID	Fully Shrunk ID	Wall Thickness After Shrinking
9.5mm	10.0 ± 0.4mm	3.5 ± 0.5mm	1.5 ± 0.30mm
25.4mm	26.0 ± 0.5mm	9.0 ± 0.8mm	2.1 ± 0.40mm

The 9.5mm option is suitable for smaller wire bundles, cable joints and connectors, while the 25.4mm option provides greater coverage for larger cable assemblies and components.

Easy Heat Shrink Installation

Cut the required length of 3:1 heat shrink tube, place it over the wire, cable or connection, and apply heat evenly using a heat gun. The tubing will gradually shrink and conform to the covered area.

For best results, keep the heat source moving rather than concentrating heat on one point.

Typical Applications

This 3:1 heat shrink tubing can be used for:

• Wire and cable insulation
• Solder joint protection
• Connector protection
• Cable bundling
• Electrical repairs
• DIY electronics projects
• RC and robotics projects
• Automotive wiring
• PCB and electronic equipment assembly

Package Options

The product page includes two size options:

• 9.5mm Red Heat Shrink Tubing
• 25.4mm Red Heat Shrink Tubing

Please select the required size from the variation options before ordering.

Important Note

The dimensions listed above are measured values and may have a small tolerance. Actual shrink performance can vary depending on the heating method, temperature and application. A heat gun is recommended for more even and controlled shrinking.

Specification	9.5mm	25.4mm
Product Type	3:1 Heat Shrink Tubing	3:1 Heat Shrink Tubing
Color	Red	Red
Shrink Ratio	3:1	3:1
Before Shrink ID	10.0 ± 0.4mm	26.0 ± 0.5mm
Fully Shrunk ID	3.5 ± 0.5mm	9.0 ± 0.8mm
Fully Shrunk Wall Thickness	1.5 ± 0.30mm	2.1 ± 0.40mm
Starting Shrink Temperature	Approx. 80°C	Approx. 80°C
Fully Shrunk Temperature	Approx. 125°C	Approx. 125°C
Operating Temperature	-55°C to 125°C	-55°C to 125°C
Recommended Heating	Heat Gun	Heat Gun

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⭐⭐⭐⭐⭐ You May Also Need

Working on electrical wiring or DIY electronics projects? You may also need a Digital Multimeter to check voltage, continuity and basic electrical connections before testing your finished assembly.

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Learn More

Want to learn more about heat shrink tubing? This guide explains how heat shrink tubing works and how it is commonly used for electrical insulation and cable protection.