High Elasticity Silicone Rubber Cold Shrink Tube Weather Resistant Insulation Sleeve for Telecom Cable Joint Protection

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 packaging

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 High Elasticity Silicone Rubber Cold Shrink Tube Weather Resistant Insulation Sleeve for Telecom Cable Joint Protection, a precision-engineered solution designed to meet the most demanding requirements in modern telecommunications infrastructure. Engineered from advanced silicone rubber compounds and optimized for practical field deployment, this high elasticity cold shrink product delivers reliable cable joint integrity, long-term environmental resistance, and simplified installation that reduces labor time and total cost of ownership

Product Overview

The silicone rubber cold shrink tube is a weather resistant insulation sleeve designed specifically for telecom cable joint protection. As a high elasticity cold shrink component, it provides a snug, durable seal over cable splices, terminations, and connectors without the need for heat or specialized equipment. Volsun’s formulation and manufacturing capability ensure uniform material properties, consistent performance, and compatibility with a wide variety of cable types used in telecommunications networks worldwide

Key Features

- High elasticity cold shrink performance: The cold shrink silicone rubber cold shrink tube offers exceptional elastic recovery and tensile strength. Pre-expanded for rapid installation, it contracts uniformly around cable joints to form a secure mechanical and environmental barrier. This high elasticity cold shrink design mitigates the risk of gaps or migration, ensuring consistent protection over time

- Weather resistant insulation sleeve construction: The weather resistant insulation sleeve is engineered to withstand UV exposure, extreme temperatures, moisture ingress, and ozone aging. The silicone rubber compound resists cracking, hardening, or embrittlement, retaining flexibility and sealing performance in harsh outdoor environments, which is essential for long-term telecom cable joint protection

- Silicone rubber cold shrink tube material benefits: Silicone rubber provides inherent flame retardant, excellent dielectric properties, and low flammability. The silicone rubber cold shrink tube exhibits low compression set, outstanding electrical insulation, and chemical resistance—attributes that contribute to reliable service life in varied deployment scenarios

- Simplified, tool-free installation: This high elasticity cold shrink product is supplied in a pre-stretched state on a removable core. Installers simply slide the high elasticity cold shrink sleeve into position and withdraw the core; the silicone rubber cold shrink tube then contracts to encapsulate the joint. The weather resistant insulation sleeve design shortens installation time, reduces reliance on hot tools or heat guns, and improves safety for field technicians

- Versatile compatibility and size options: Volsun’s silicone rubber cold shrink tube is suitable for a broad range of telecom cable joint protection applications, accommodating different cable diameters and connector profiles. The high elasticity cold shrink geometry conforms to irregular shapes and multi-core assemblies, while the weather resistant insulation sleeve provides consistent sealing regardless of substrate variance

Applications and Use Cases

- Telecom cable joint protection in local access networks: The silicone rubber cold shrink tube is ideal for protecting splices and connectors in fiber-to-the-home (FTTH), fiber-to-the-curb (FTTC), and broadband access cabinets. The weather resistant insulation sleeve significantly reduces the risk of moisture ingress that can degrade signal quality

- Outdoor node and street cabinet deployments: For equipment mounted in cabinets or exposed street-side enclosures, the high elasticity cold shrink solution delivers reliable long-term sealing against rain, humidity, dust, and UV exposure

- Backbone and long-haul cable joints: The silicone rubber cold shrink tube performs across varied climatic zones and altitude ranges, providing consistent telecom cable joint protection for backbone links and inter-building runs

- Temporary and permanent repairs: The weather resistant insulation sleeve serves both as a rapid emergency repair for field crews and as a permanent sealing solution. The high elasticity cold shrink characteristic enables rapid application without sacrificing durability

Innovation and Technical Advantages

- Optimized silicone compound formulation: Volsun’s R&D team has developed proprietary silicone rubber blends that balance elasticity, tensile strength, and weather resistance. The silicone rubber cold shrink tube benefits from formulations designed to minimize cold flow and compression set while maximizing long-term sealing force around cable joints

- Precision-controlled manufacturing: With two production bases and a history of polymer innovation, Volsun ensures consistent dimensional control and material homogeneity across production batches. This manufacturing rigor guarantees that each silicone rubber cold shrink tube performs as a dependable weather resistant insulation sleeve for telecom cable joint protection

- Certification and quality assurance: Backed by IATF 16949 and ISO 9001 systems, Volsun’s production and quality processes meet global industry standards. The silicone rubber cold shrink tube undergoes electrical, mechanical, thermal aging, and environmental testing to validate the weather resistant insulation sleeve’s longevity for telecom cable joint protection

- Scalable OEM/ODM solutions: Volsun supports customized designs and packaging for large-scale deployments. The high elasticity cold shrink product can be tailored in length, wall thickness, color codings, and mechanical properties to match project specifications, accelerating integration into utility and carrier procurement workflows

Performance Benefits

- Enhanced reliability: The silicone rubber cold shrink tube provides consistent mechanical sealing and electrical insulation, reducing the incidence of moisture-related failures or signal degradation in telecom cable joint protection

- Cost-effective lifecycle: Tool-free, rapid installation lowers labor costs and outage windows. The weather resistant insulation sleeve requires minimal maintenance, reducing repeat visits and total cost of ownership

- Environmental resilience: The combination of silicone rubber cold shrink tube material and Volsun’s weather resistant insulation sleeve design delivers robust protection in marine, desert, and urban environments where UV, temperature swings, salt spray, and pollutants can challenge conventional sealing solutions

- Improved safety and compliance: Eliminating the need for open flame or powered heating tools during installation enhances field safety and simplifies compliance with local installation regulations

Why Choose Volsun

Founded in 2006 and recognized as a National High-tech Enterprise, Volsun specializes in polymer materials R&D and production, offering a proven track record across electricity, telecom, automotive, and electronics sectors. With 97 patents, multiple quality certifications, and a global customer base, Volsun combines material science expertise with manufacturing scale to deliver dependable solutions. The High Elasticity Silicone Rubber Cold Shrink Tube Weather Resistant Insulation Sleeve for Telecom Cable Joint Protection embodies Volsun’s commitment to innovation, performance, and field-ready practicality

Installation Guidance

- Prepare and clean the cable joint area.

- Slide the pre-expanded high elasticity cold shrink silicone rubber cold shrink tube over the joint

- Position precisely and remove the inner core to allow the weather resistant insulation sleeve to contract and seal

- Inspect the seal and perform any mechanical restraints or protective coverings as specified by local standards

For telecom operators, contractors, and OEMs seeking a durable, easy-to-install, and field-proven solution, Volsun’s silicone rubber cold shrink tube weather resistant insulation sleeve provides superior telecom cable joint protection. Contact Volsun for technical datasheets, custom sizing options, and deployment support to ensure optimal performance across your network projects