Cold Shrink Wrap Tube for Telecommunication Cables
Cold Shrink Silicone Tubes Manufacturer
Suconvey supplies cold shrink wrap tubes specially engineered for telecommunication cable protection, outdoor signal lines, fiber optic connections and related communication infrastructure.
These tubes use pre-expanded elastomer technology to provide a reliable environmental seal — without heat or tools — making field installation faster, safer and more consistent.
Cold Shrink Wrap Tube
Cold shrink wrap tubing is a hollow elastomeric sleeve that has been factory-expanded and pre-stressed on a removable core.
When the core is pulled out on site, the tube naturally contracts and tightly conforms around the cable, splice or connector to form an effective seal.
Unlike heat shrink tubing, cold shrink does not require a heat source to install — eliminating the need for tools like torches, hot air guns or heat blankets on site.
Product Details
Cold Shrink Wrap Tubing Supplier
Key Features
Cold shrink tubing can be made from advanced elastomers such as silicone rubber, delivering:
- Excellent elasticity and memory — recovers to tightly grip after installation.
- Temperature resilience — suitable for a wide outdoor service range.
- Ozone and UV resistance for outdoor exposure.
- Good mechanical protection against abrasion, vibration and compression.
- Chemical resistance against common pollutants and environmental contaminants.
Compared to traditional heat shrink tubing, cold shrink solutions normally offer faster installation, improved safety and more reliable field performance — especially in telecom environments where repeatability matters.
China Cold Shrink Wrap Tube Manufacturer
Technical Specifications
| Cold Shrink Wrap Tube for Telecom Cable – Typical Specifications | |
|---|---|
| Material | Silicone Rubber |
| Operating Temperature | -55°C to +200°C (varies by compound) |
| Environmental Protection | Weatherproof, Water & Dust Resistant |
| Installation Method | Tool-free core removal cold shrink |
| Typical Uses | Cable sealing, joint protection, ferry-point wrap |
| UV & Ozone Resistance | Excellent |
| Water Tightness | High (prevents moisture ingress) |
| Size Options | Various ID/OD ranges per cable diameter |
| Color | Standard Black (other colors upon request) |
Expanded Applications
Cable & Connector Protection
- Outdoor telecom cable end protection
- Junction boxes and splice closures
- Drop cable and distribution point sealing
- Fiber optic jumper and pigtail insulation
Cold shrink tubing forms a snug, moisture-resistant seal even in irregular geometries, protecting against corrosion and signal degradation caused by water or dirt ingress.
Signal Line Weatherproofing
- Cold shrink tubes can be used to shield outdoor telco hardware — such as antenna feeders and repeater connections — from UV, rain, salt spray and temperature swings.
- By eliminating the need for heat, field teams can install protection even in tight, enclosed or hazardous areas with greater safety and fewer tools.
Broadband & Fiber Networks
- In urban and rural fiber deployments, pre-expanded cold shrink sleeves are often used at service nodes, waypoints and hand-off points to ensure long-term reliability of spliced fiber junctions.
- The elastomeric properties conform to microscale irregularities to keep consistent sealing pressure without rebound gaps.
Cold Shrink Tube Technical Selection Table
| Voltage Class | Nominal Inner Diameter (mm) | Wall Thickness (mm) | Suitable Cable Cross Section (mm²) |
|---|---|---|---|
| 1 kV | 7 | 2.0 | 25 – 50 |
| 1 kV | 9 | 2.0 | 70 – 120 |
| 1 kV | 13 | 2.0 | 150 – 240 |
| 1 kV | 17 | 2.0 | 300 – 400 |
| 10 kV | 12 | 2.5 | 25 – 50 |
| 10 kV | 15 | 2.5 | 70 – 120 |
| 10 kV | 18 | 2.5 | 150 – 240 |
| 10 kV | 21 | 2.5 | 300 – 400 |
| 35 kV | 22 | 3.0 | 50 – 95 |
| 35 kV | 25 | 3.0 | 120 – 185 |
| 35 kV | 28 | 3.0 | 240 – 400 |
| 35 kV | 30 | 3.0 | 500 – 630 |
Why Choose Cold Shrink for Telecom Applications?
Tool-Free, Fast & Safe Installation
Cold shrink tubes can be installed quickly under varied field conditions — no flame, no hot air tools — reducing installation risk and labor cost while ensuring consistent sealing performance.
Superior Environmental Protection
Once fitted, the cold shrink wrap tube provides a tight, weather-resistant seal around cable joints, connectors and fiber assemblies. It helps prevent moisture ingress, dust penetration and other environmental contamination.
Better Long-Term Reliability
Cold shrink technology maintains sealing force even under temperature cycling, vibration and mechanical stress — making it ideal for outdoor or hard-to-reach installations.
Consistent Field Performance
Because cold shrink installation does not rely on operator heating technique, results are more uniform from job to job, helping reduce rework and failures in service.
Why Choose Suconvey?
Suconvey provides more than just tubing — we offer engineering support, quality assurance and tailored supply solutions to help your project succeed:
---Deep Material Expertise
- Over 10+ years specializing in silicone tubing and hose for industrial, food, beverage and pharmaceutical markets.
- Understand performance tradeoffs for tubing under temperature, pressure, flex cycles and hygiene requirements.
---Quality from Raw Material to Delivery
- Controlled extrusion to maintain tight tolerances
- In-house inspection for wall thickness, inner/outer diameter and surface quality
- Batch traceability for consistency and audit support
---Flexible MOQ & Sample Support
- Support small and pilot orders before production scaling
- Quick turn pre-production samples to verify fit and performance
- Customized packaging and labeling per project needs
---Global Supply & On-time Delivery
- Efficient logistic planning to keep your production on schedule
- Export packing optimized for protection, cleanliness and traceability
Happy Customers
Year after year, multiple industries recognize Suconvey Rubber as a leader in quality, service, and innovation. We’re proud to be one of the top rubber products manufacturers in the world.
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Frequently Asked Questions
If your question is not listed, please contact us.
Cold shrink tubing is pre-expanded and contracts when the internal support is removed — no heat needed. Heat shrink tubing requires heating tools to shrink around the cable. Cold shrink is safer and more consistent for field installation.
Cold shrink installation does not introduce heat, but work on live lines should follow applicable safety protocols and local electrical standards.
Yes, properly selected cold shrink wraps form a tight seal that resists moisture ingress and environmental exposure.
Yes — we offer a range of ID/OD options and can tailor sizes to your cable specifications.
Absolutely — with UV and ozone resistant material options, cold shrink wraps are well suited to outdoor telecommunication installations.
