Your Specialist in Insulation & Sealing and Protection Solution

Focus on heat shrink tube, cold shrink tube, wire and cable identification labels, Volsun Electronics is your ideal choice for industry insulation, sealing and protection.

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Technology Knowledge



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Communication cold-shrinkable tube is a kind of rubber insulation sleeve which is pre-expanded on the support tube. When it is used, it only needs to be positioned and then the support tube is pulled out. The radial pressure is used to form a cover, which is waterproof and moisture-proof effect.

The communication cold shrinkable tube is made of silicone rubber or EPDM rubber material, which has excellent weather resistance, acid and alkali resistance, and achieves the function of sealing with breathing. It is an ideal sealing material for communication cables and coaxial cables.

Compared to the heat shrink tube, it no need to heat or special tools when used.

Volsun is a pioneer manufacturer of cold shrink tube in China, we will show you the following installation steps, it is easy to operate.

1. Clean the connector first

2. Choose the suitable size of cold shrink tube

3. Put the cold shrink tube on the connector and install the connector

4. Pull the supporting core off slowly

5. Installation finished

Please do not hesitate to contact us if any questions.

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