About Product
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RUBLS-SILIC Silicone Rubber Cold shrink tube Series Cold Shrink Lug and Connector Insulators is made of special purpose silicone rubber with a high shrink ratio and excellent physical and mechanical properties like slab and prick resistance. It reliably seals electrical connections of electric communications and cable televisions against water and moisture and effectively insulates wire and cable connections or joints and other electrical connections etc
- Continuous operating temperature: -60°C-200°C
- Shrink Ratio : 4:1 or so. Suits for an extensive range of cable sizes because of the shrinkage
- Retains its resiliency and pressure even after prolonged years of ageing and exposure, seals tight against moisture and water
- Good weather resistance, ozone ageing, ultraviolet and salt mist corrosion resistance, performs stably under long-period exposure to the sun
- Excellent tear resistance
- Simple installation, requires no special heating tools, and adhesive to seal the connections
- Standard color: black
About Us
Volsun, founded in 2006, is a high-tech enterprise specializing in the research, development, production, and sales of polymer materials. With two major production bases in Yangzhou and Suzhou covering over 25,000 square meters, we provide a comprehensive range of safety protection solutions, including insulation, sealing, waterproofing, thermal conductivity and electrical conductivity, widely applied across industries such as electricity, telecommunications, automotive, and electronics etc.
Driven by innovation, Volsun has established strong industry-academia-research partnerships with leading Chinese universities and holds 97 technology patents, reinforcing our leadership in polymer materials technology. Our core products include cold shrink/heat shrink tubes, fiberglass sleeves, silicone self-fusing tape, silicone overhead line cover, thermal pads, shaft grounding rings, and various insulation products. Volsun is certified under IATF 16949 and ISO 9001 quality management systems, ensuring the highest product standards.
As a technology-driven company, guided by our mission to innovate materials for a safer world, we have provided OEM and ODM services to over 6,000 customers in 88 countries. Committed to continuous innovation, we strive to deliver superior protection solutions that enhance the safety and performance of your projects
FAQs
How long is the payment term
We accept T/T 50% deposit and 50% balance against B/L or L/C copy at sight, also accept Western Union, VISA and Paypal
What is the normal lead time for product orders
The average lead time for prototype/first piece is 7~10 days, if tooling is involved, the lead time for production tooling is 10 days, and the average production time after sample approval is 2-3 weeks
What is your standard packagin
All goods will be packed in cartons and loaded on pallets. Special packing methods are acceptable when needed
What kind of certificates do you have
We have ISO9001: 2015, IATF16949:2016, ISO14001: 2015, ISO45001:2018 certified. We have various rubber compounds approved by UL, ROHS and REACH
How to check the quality of bulk order
We provide pre-production samples to all customers before mass production if needed.
We accept third-party inspection, such as SGS, TUV, INTERTEK, BV, etc
Can you provide customized service
Yes, we accept customization and can produce products in different sizes, packaging, colors according to requirements
Volsun presents the Volsun Customized Silicone Rubber Cold Shrink Tube for Cable Joints and High Voltage Electrical Insulation, an advanced solution engineered to deliver reliable performance across demanding environments. As a proven leader in polymer materials research and manufacturing since 2006, Volsun integrates decades of expertise into a next-generation silicone cold shrink tube product line that addresses critical needs in utility, telecom, automotive, and electronics sectors. This product is built to excel where robust dielectric properties, mechanical resilience, and streamlined installation are essential.
Product Overview and Core Features
The Volsun Customized Silicone Rubber Cold Shrink Tube is formulated from high-purity silicone elastomers optimized for cold shrink technology. Designed specifically for cable joint protection and high voltage insulation solutions, the silicone cold shrink tube provides a pre-expanded, axially stable sleeve that contracts onto the cable joint when the inner core is removed. This design eliminates heat-based installation, reducing the need for torches and hot-air tools while improving safety and installation speed. The silicone cold shrink tube offers superior conformity to irregular surfaces and complex terminations, creating a uniform, void-free seal essential for long-term dielectric performance.
Material Advantages and Electrical Performance
At the heart of the Volsun solution is a silicone compound selected for high dielectric strength, excellent arc resistance, and sustained insulation properties across a broad temperature range. This silicone cold shrink tube resists aging, ozone, UV radiation, and common chemical exposures found in field environments, ensuring lasting protection for cable joints. For high voltage insulation solutions, the silicone cold shrink tube delivers stable insulation resistance and low dielectric loss, making it an ideal choice for overhead, underground, and substation applications where reliability is paramount.
Mechanical Resilience and Environmental Sealing
Beyond electrical properties, the Volsun customized silicone cold shrink tube provides outstanding mechanical resilience. It maintains flexibility at low temperatures and resists hardening or cracking over time, preserving cable joint protection integrity. The silicone cold shrink tube’s compressive recovery and elongation properties ensure tight, durable sealing around conductors, terminations, and accessory profiles. Water ingress and contamination are prevented by tight radial pressure and material hydrophobicity, enhancing longevity in wet and corrosive environments and strengthening overall high voltage insulation solutions.
Customization and Application Versatility
Volsun offers full customization of silicone cold shrink tube dimensions, shore hardness, and internal profiles to meet specific cable joint protection requirements for single-core and multi-core cables, as well as for a wide range of voltages. Custom dielectric gradation, semi-conductive layers, or multi-piece designs can be specified to match unique system architectures and to provide targeted high voltage insulation solutions. This product’s adaptability extends to automotive electrical insulation needs where compact, heat-resistant, and vibration-tolerant protection is required. The silicone cold shrink tube can be tailored to automotive harnesses, battery pack interconnects, and sensor connections, providing a consistent approach to cable joint protection across industries.
Installation Efficiency and Safety Benefits
Cold shrink installation of the Volsun silicone cold shrink tube significantly reduces installation time compared to heat-shrink alternatives. The pre-expanded sleeve simply slides over the joint and is allowed to recover to its original profile upon removal of the core or supporting element. Eliminating the need for a heat source enhances safety on site, particularly in confined spaces or near combustible materials. For utility crews and field technicians, using the silicone cold shrink tube reduces the risk of thermal damage to adjacent components and minimizes service disruptions, making it a preferred choice among high voltage insulation solutions.
Standards Compliance and Quality Assurance
Volsun’s manufacturing rigor and quality management systems are reflected in the silicone cold shrink tube’s compliance with industry standards for electrical insulation and environmental durability. Leveraging the company’s 97 patents and robust certifications, the silicone cold shrink tube undergoes comprehensive testing for dielectric strength, ingress protection, mechanical cycling, and thermal endurance. These stringent controls support dependable performance in power distribution networks, telecommunication backbones, and automotive electrical systems where certified high voltage insulation solutions are required.
Innovative Design Features
Innovations in the Volsun silicone cold shrink tube include multi-layer constructions for graded stress control, integrated stress relief cones for terminating insulated shields, and optional adhesive or semi-conductive inner linings to enhance sealing and electrical continuity. Such design elements are particularly beneficial for complex cable joint protection scenarios in high voltage insulation solutions. By combining precise engineering with scalable production capabilities, Volsun enables customers to deploy silicone cold shrink tube solutions that meet both standard and highly specialized requirements.
Why Choose Volsun
With 17+ years of focused development and manufacturing experience, Volsun delivers silicone cold shrink tube products supported by strong R&D and production bases. The company’s OEM/ODM capacity serves 6,000 customers across 88 countries, reflecting a proven track record in delivering reliable high voltage insulation solutions and cable joint protection products. By choosing Volsun’s silicone cold shrink tube, customers gain access to customized solutions backed by rigorous quality systems, ongoing technical support, and continuous innovation in polymer technology.
Typical Use Cases and Industry Applications
- Power distribution networks: trusted silicone cold shrink tube protection for medium and high voltage cable joints, terminations, and splice assemblies.
- Telecom and data centers: reliable high voltage insulation solutions for fiber-optic and power interconnects where space and heat sensitivity exist.
- Automotive sector: compact silicone cold shrink tube variants for automotive electrical insulation, battery interconnect protection, and high-voltage vehicle systems.
- Industrial electronics and control systems: cable joint protection for critical instrumentation and control cabling exposed to challenging environments.
Performance Validation and Field Reliability
Field-proven in diverse climates and installation contexts, Volsun’s silicone cold shrink tube demonstrates consistent long-term performance in both new construction and retrofit scenarios. The combination of cold shrink convenience, silicone material stability, and tailored product engineering yields measurable reductions in maintenance cycles and failure rates for cable joint protection and high voltage insulation solutions. Customers benefit from fewer outages, lower lifecycle costs, and enhanced system reliability.
Volsun’s Customized Silicone Rubber Cold Shrink Tube for Cable Joints and High Voltage Electrical Insulation is a high-performance, safety-oriented, and customizable solution designed to meet contemporary demands across power, telecom, automotive, and electronics industries. Engineered for superior dielectric properties, mechanical robustness, environmental sealing, and installation efficiency, the silicone cold shrink tube is ideal for organizations seeking dependable cable joint protection and advanced high voltage insulation solutions. With Volsun’s extensive experience, patented technologies, and global manufacturing footprint, customers obtain a tailored silicone cold shrink tube solution that delivers long-term reliability and measurable operational benefits.
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