Erko RTCK 4-1-C/1 Thin-Walled Heat Shrink Tubing with Adhesive, Black, 4/1 mm, 1m

The Erko RTCK 4-1-C/1 is a professional-grade thin-walled heat shrink tubing designed to provide reliable electrical insulation and environmental protection. Featuring an integrated internal adhesive layer, this tubing ensures a secure, moisture-resistant seal once heat is applied. It is engineered to shrink from an initial diameter of 4 mm down to 1 mm, making it ideal for securing connections and protecting wires in various electrical installations.

Advantages

This heat shrink tubing offers exceptional mechanical strength and durability, ensuring that wire connections remain protected against abrasion and environmental stress. The internal adhesive layer melts during the shrinking process to create a tight, waterproof bond that prevents moisture ingress and corrosion. Its thin-walled construction allows for flexibility while maintaining high performance, making it a versatile solution for both industrial and domestic electrical projects.

Suitable for

• Electrical insulation of wire joints
• Cable bundling and organization
• Moisture-proofing electrical connections
• Repairing damaged cable insulation
• Strain relief for wire terminations

This product may not be suitable for applications involving extreme high-temperature environments that exceed the material's thermal rating. It is also not intended for use as a primary structural support for heavy-duty mechanical components or in environments with constant exposure to aggressive chemical solvents.

Key specifications

• Shrink ratio: 4:1
• Initial diameter: 4 mm
• Shrunk diameter: 1 mm
• Color: Black
• Material: Thin-walled polyolefin with internal adhesive
• Length: 1 meter

To use the Erko RTCK tubing, cut a piece to the desired length, ensuring it covers the area requiring insulation. Slide the tubing over the wire or connection and apply heat evenly using a heat gun or a similar heat source. As the tubing shrinks, the internal adhesive will activate and flow, creating a sealed and secure fit around the connection. Allow the tubing to cool completely before handling to ensure the adhesive has set properly.

What to consider before purchase

• Verify the diameter of your cables to ensure the 4 mm to 1 mm shrink range is appropriate
• Ensure the heat source used is capable of reaching the required activation temperature
• Check if the application requires specific chemical or UV resistance beyond standard insulation

For optimal results, apply heat starting from the center of the tubing and move toward the ends to prevent air pockets. Ensure the surface is clean and free of oils or debris before application to allow the adhesive to bond effectively.