When it comes to outdoor power and communication projects, protecting cable joints is often the most challenging part of the job. Traditional methods frequently fall short: heat-shrink tubes require dangerous open flames, while standard cold-shrink options often lack the durability to survive constant sun exposure or physical abrasion.
Enter the Volsun RUBLS-EPDM Cold Shrink Tubing. Manufactured by Suzhou Volsun—a leader with over 20 years of expertise in insulation protection—this EPDM cold shrink tube (Ethylene Propylene Diene Monomer) rubber solution is specifically engineered to solve these industry pain points for low-voltage cables under 1kV.
- Installation Made Simple: No Heat, No Hassle
- Zero Tools Required: Simply position the tube and pull the internal plastic support core to shrink it onto the cable.
- One-Person Operation: This process eliminates the need for blowtorches, specialized heat guns, or messy adhesives and tapes.
- Efficiency: It effectively doubles installation efficiency during urgent maintenance tasks.
2. Built to Weather the Storm
Unlike traditional heat-shrink tubes that can become brittle over time, RUBLS-EPDM is built for the long haul.
- UV Resistance: In ASTM G-53 standard tests, this tubing showed no signs of aging after 1,000 hours of UV exposure.
- "Breathing" Seal: EPDM rubber is uniquely elastic, allowing it to expand and contract in sync with the cable during temperature shifts. This ensures a tight, waterproof seal even when cables are swaying in the wind.
- Physical Durability: It offers superior puncture and abrasion resistance compared to silicone-based alternatives, making it ideal for harsh industrial environments.
3. Technical Excellence by the Numbers
The performance of Volsun’s RUBLS-EPDM isn't just a claim—it is backed by rigorous ASTM-compliant data:
- Hardness: 49 Shore A, providing the perfect balance of flexibility and structural support.
- Strength: Tensile strength≥8.6MPa with an elongation at break≥600%.
- Tear Resistance: ≥25kN/m, ensuring it withstands accidental punctures.
- Electrical Safety: Dielectric strength≥15kV/mm for reliable insulation.
- Anti-Fungal: Meets ASTM G-21 standards with zero mold growth after 28 days.
4. Versatile Applications Across Industries
Whether it’s the salt spray of the coast or the confined space of a subway tunnel, this tubing adapts to any environment.
| Industry | Application | Core Advantage |
|---|---|---|
| Power Systems | Low-voltage (<1kV) cables | Weatherproof and underground/underwater ready |
| Telecom | Coaxial and base station cables | UV resistance and superior moisture sealing |
| Rail Transit | Tunnel and trackside cabling | Puncture resistance and flame-free installation |
| Chemical/Coastal | Offshore rigs and factories | Acid, alkali, and salt spray corrosion resistance |
With more than 100 patents and certifications including ISO9001 and UL, Volsun exports high-quality insulation solutions to 88 countries. Beyond standard sizes, they offer customized dimensions to meet the specific needs of your unique project.
Contact with Volsun team to get a solution that is faster to install and harder to break.
- CONTACT TEL: +86-512-66386808
- SALES CONTACT: volsun2006@szvolsun.com