The EM Group heat shrink tubing with a 39/13mm diameter ratio is a professional-grade solution designed for robust electrical insulation and cable protection. Featuring an integrated internal adhesive lining, this tubing provides a secure, moisture-resistant seal that prevents environmental damage to cable joints and terminations. Its high-quality material composition ensures that it shrinks uniformly when heat is applied, conforming tightly to the underlying surface for maximum durability in both industrial and domestic electrical installations.
Advantages
The primary benefit of this heat shrink tubing is its dual-wall construction, which includes an adhesive layer that melts during the shrinking process to create a permanent, waterproof bond. This feature significantly enhances the mechanical strength of the connection and provides superior protection against moisture, chemicals, and abrasion. The tubing is highly flexible yet resilient, maintaining its structural integrity over a wide range of temperatures and ensuring long-term reliability for critical wiring projects.
Suitable for
- Insulating and sealing electrical cable joints
- Protecting cable terminations from moisture and corrosion
- Repairing damaged cable insulation in industrial environments
- Securing wiring harnesses in automotive or domestic applications
When it may not be suitable
This tubing is not intended for use in environments where temperatures consistently exceed the material's thermal rating, as this could compromise the seal or the tubing's integrity. It is also not recommended for applications requiring high-voltage insulation beyond standard electrical wiring specifications.
Key specifications
- Shrink ratio: 3:1 (39mm to 13mm)
- Color: Black
- Material: Heat-shrinkable polyolefin with adhesive lining
- Moisture resistance: High
- Application: Electrical insulation and cable sealing
How to use
To use the tubing, first cut a piece to the desired length, ensuring it covers the area to be protected with sufficient overlap on both sides. Slide the tubing over the cable or joint before making the final connection. Apply heat evenly around the entire circumference of the tubing using a heat gun or a controlled heat source, starting from the center and moving toward the ends. Continue heating until the tubing has fully shrunk and the adhesive begins to flow slightly at the edges, indicating a secure seal. Allow the assembly to cool completely before handling.
What to consider before purchase
- Ensure the 39mm diameter is sufficient to slide over your specific connector or cable bundle
- Verify that the 13mm shrunk diameter provides a tight fit for your cable gauge
- Check that your heat source is capable of reaching the required activation temperature
Usage recommendations
For the most reliable results, always clean the surface of the cable or joint thoroughly to remove any oils or debris before applying the tubing. This ensures that the internal adhesive can bond effectively to the substrate, providing the best possible moisture-resistant seal.
