NKS Unveils Breakthrough Silicone Rubber Cold Shrink Seal Tube with Unprecedented 4:1 Expansion Ratio for Superior Telecom Protection

NKS Power has consistently been at the forefront of delivering cutting-edge solutions to the telecommunications and infrastructure industries. The company has recently unveiled its game-changing silicon rubber cold shrink tubes. This next-level sealing solution features a 1:4 expansion ratio that leads the industry, raising the bar on both ease of installation and long-term environmental protection in critical communications applications.

Ⅰ. Meeting Modern Telecom Infrastructure Demands 

With 5G, fiber-to-the-home (FTTH), and network densification, telecom infrastructures are expanding rapidly, together with a proliferation of equipment, lines, and nodes facing both natural environmental and human operational challenges. Traditional sealing solutions do not provide speed of installation, long-term sealing, and resilience to the environment, thereby increasing maintenance costs as well as outages in network services.

NKS Power's new Cold Shrink Sealing Tube addresses these challenges with superior performance and innovative design. It is quick and easy to install, has a consistent seal, and can withstand harsh environments to ensure reliable network operation. This product provides an efficient and reliable sealing solution for the telecom industry and is perfectly suited to the needs of modern telecom infrastructures to ensure the stable operation of telecom networks.

Ⅱ. Unparalleled Technology: 1:4 Silicone Rubber Expansion Ratio

The core innovation lies in its unique silicone rubber formula and advanced manufacturing process, which realizes an amazing 1:4 expansion ratio. This breakthrough offers significant advantages over standard cold shrink tubing:

1. Simplified Installation

The superior expansion capability allows the tubing to be easily snapped into large connectors, splices, or irregular shapes, dramatically reducing installation time and labor compared to products with lower expansion ratios. No heat guns or special tools are required, making the installation process more efficient and easier.

2. Excellent Fit and Sealing

The natural flexibility of silicone rubber, combined with a 1:4 expansion ratio, ensures that the tubing fits tightly and uniformly to the substrate - even on surfaces with complex geometries or varying diameters - to form a continuous, void-free and highly reliable moisture and environmental seal. Moisture and environmental sealing. This sealing performance is critical to protecting communications equipment from environmental attack.

3. Enhanced Reliability and Durability

Silicone rubber offers excellent resistance to UV radiation, ozone, temperature extremes (-55°C to +200°C typical), and aggressive chemicals. This means long-term resistance to corrosion, electrical leakage, and performance degradation, resulting in lower maintenance costs and reduced network downtime.

4. Superior Electrical Performance 

Silicone rubber cold shrink seal tube provides the high dielectric strength and consistent insulation properties critical to protecting sensitive telecommunications connections. In the telecommunications industry, this electrical performance ensures the stability and reliability of signal transmission.

5. Wide Range of Applications 

For sealing and insulating: 

• Fiber optic splice closures and terminations 

• Cable pass-throughs in cabinets, pedestals, and handholes 

• Power cable terminations and splices (low/medium voltage) 

• Antenna/RF cable connections 

• General-purpose environmental sealing of ports and connections in telecommunication and power equipment 

Ⅲ. Designed for Performance and Durability

Silicone rubber cold shrink tubing has a rugged design and a high-resilient EPDM inner layer that peels off cleanly and reliably during installation. Silicone rubber cold shrink tubing features a rugged design with a highly resilient EPDM inner layer that peels cleanly and reliably during installation. The silicone rubber cover provides long-lasting mechanical strength and environmental protection. Its cold-shrink technology ensures safe installation without the risks associated with open flames or hot work permits.

Ⅳ. Commitment to Innovation

Our launch of the 1:4 Expanded Silicone Rubber Cold Shrink Seal Tubing underscores NKS Power's commitment to driving innovation in the field of network protection." Mr. Hai Yu, CEO of NKS, said, "By significantly improving ease of installation while providing silicone rubber's unmatched environmental resilience, we empower telecom operators and contractors to deploy and maintain their networks in a faster and safer manner, and increase confidence in long-term reliability. This product solves real-world installation challenges and contributes directly to network integrity."

Ⅴ. Availability

1:4 expansion ratio silicone cold shrink sealing tubing is now available in a variety of diameters and lengths to meet different application requirements. Cold shrink OEM services are available.

Ⅵ. Learn More

For detailed specifications, application guides, or to request samples, please send your inquiry to yuhai@nkselectric.com.