Custom Size Weatherproof Flame Retardant Self Locking Silicone Overhead Line Cover for Electrical Wire

Product Description

Self-locking Silicone Overhead Line Cover

Self-locking silicone overhead line cover is made of high quality silicone rubber material, with excellent electrical, anti-leakage marking performance, excellent weather resistance, high mechanical properties, with hydrophobic and hydrophobic migration characteristics, high and low temperature resistance is extremely excellent. It is convenient and simple to install, saves labor and time, and is used for insulation protection of cables and wires, and increases the safe distance between objects and cables/ wires

Features:

* Soft and resistant to bending

* Long service life, aging resistance, corrosion resistance

* Flame retardant performance: V-0, non-flame retardant can be customized

* Color: Red, Gray - customizable

* Easy installation, no flame required, short power-off construction time

Support customization

Contact us for free samples

VR

Technical Performance

Item	Typical Value	Test Method
Electrical Strength Test	≥20V/mm	GB/T 1408.1-2006
Volume Resistivity	≥1×10^14Ω·cm	GB/T 1410-2006
Dielectric Constant	2～3	GB/T 1409-2006
Shore Hardness	70±5A	GB/T 531
Mechanical Properties Before Heat Ageing
Tensile Strength	≥4.0MPa	GB/T 528
Elongation at break	≥200%	GB/T 528
After Heat Ageing - 180℃, 7d
Tensile Strength Change	±30%	GB/T 528
Elongation Change	±30%	GB/T 528
Low Temperature Elongation - -15℃, 2h	≥20%	GB/T 2951.4-1997
Low Temperature Flexibility - -50℃, 4h	No cracks	UL224-2004
High Temperature Crack Resistance - 155℃, 2h	No cracks	GB/T2951.6-1997

Dimensions

LJ Type Aluminum Strand Applicable Product Selection Table
Nominal cross-sectional area - mm²	Nominal outside diameter - mm	Specifies the specifications of the insulation bushing - mm
16	5.10	Ф 8
25	6.45	Ф 10
35	7.50	Ф 10
50	9.00	Ф 12
70	10.80	Ф 14
95	12.50	Ф 16
120	14.25	Ф 18
150	15.75	Ф 20
185	17.50	Ф 22
240	20.00	Ф 24
300	22.40	Ф 28
400	25.90	Ф 32
500	29.12	Ф 35

Size is available to customize

Voltage Level and Wall Thickness Level Corresponding Table
Votalge Rate	≤10kV	≤35kV	≤110kV	≤220kV
Wall Thickness	2.0±0.3mm	2.6±0.4mm	4.0±0.5mm	6.0±1.0mm

Company Show

Suzhou Volsun Electronics Technology Co., Ltd. was founded in 2006. We keep focusing on the R&D, production and sales in insulation, sealing & protection solutions for over 18 years

Quality is our culture. Volsun has a modern quality management system, which has passed a series of quality system certification such as IATF16949, ISO9001 etc

Up to now, Volsun cooperated with customers from 88 countries, we offer suitable sealing, waterproof solutions for some well-know enterprises in communication, Automobile, Power industry etc

Certifications

Abroad Exhibition

Las Vagas AAPEX

Moscow Expo

Hannover Messe

Packing & Delivery

Trade terms	FOB, EXW, CIF, DDU, DDP, CFR
Payment terms	T/T, L/C, Negotiable
MOQ	100M
Supply capability	1,000,000 mts per month
Lead time	Usually 3-5 working days
Shipment	Express, Air, Sea
Port	Shanghai, Ningbo, Shenzhen
Sample availability	Yes
Sample time	Usually 1-3 days
Packaging	Normal: Plastic bag & Carton & Pallet Special: Customized packing

FAQ

Q 1. How long is the payment term
A: 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

Q 2. What is the normal lead time for product orders
A: 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

Q 3. What is your standard packaging
A: All goods will be packed in cartons and loaded on pallets. Special packing methods are acceptable when needed

Q 4. Can you tell us the monthly production capacity of your products
A: It depends on the model, we produce more than 1500 tons of rubber materials per month

Q 5. What kind of certificates do you have
A1: We have ISO9001:2015, IATF16949:2016, ISO14001:2015, ISO45001:2018 certified
A2: We have various rubber compounds approved by UL, ROHS and REACH

Q6: How to check the quality of bulk order
A1: We provide pre-production samples to all customers before mass production if needed
A3: We accept third-party inspection, such as SGS, TUV, INTERTEK, BV, etc

Q 7: Can you provide customized service

A: Yes, we accept customization and can produce products in different sizes, packaging, colors according to requirements

Volsun presents the Custom Size Weatherproof Flame Retardant Self Locking Silicone Overhead Line Cover for Electrical Wire, engineered for demanding environments where reliable protection, long-term durability, and easy installation are essential. This silicone overhead line cover is a next-generation solution designed to provide superior protection for overhead and exposed wiring. As a versatile silicone overhead line cover, it blends advanced flame retardant and weatherproof electrical insulation properties with a user-friendly self-locking cable sleeve design to ensure cables stay protected in harsh conditions.

Product features and design

This silicone overhead line cover is made from premium silicone compounds that deliver consistent performance across a wide temperature range. The silicone overhead line cover offers excellent flexibility for custom size requirements, enabling installers to specify dimensions that match unique cable bundles. The product is built to meet rigorous flame retardant wire protector standards; as a flame retardant wire protector, it limits flame spread and reduces the risk of ignition in circuit fault scenarios. The seamless combination of flame retardant wire protector performance and weatherproof electrical insulation ensures both safety and reliability.

The self-locking cable sleeve mechanism simplifies field deployment. The self-locking cable sleeve is engineered to secure the cover around cables without the need for separate fasteners or adhesives. This self-locking cable sleeve functionality reduces installation time and labor costs while preserving a tight seal around the cable surface. The self-locking cable sleeve is compatible with a variety of cable diameters and can be manufactured to custom size specifications to accommodate multiple conductor configurations.

Applications and use cases

Volsun’s silicone overhead line cover is suited for a wide range of industrial, commercial, and public infrastructure applications. This silicone overhead line cover is ideal for overhead distribution lines, temporary power installations, outdoor lighting circuits, telecommunications cabling, and maintenance zones where exposed conductors need rapid protection. As a flame retardant wire protector, the product is particularly useful in environments where fire safety codes demand materials that resist ignition. The weatherproof electrical insulation characteristics make the product well-suited for coastal installations, substation perimeters, and any outdoor environment subject to moisture, UV exposure, and temperature fluctuations.

Emergency responders and utility crews can benefit from the quick-deployment nature of the self-locking cable sleeve design. When rapid isolation and temporary protection of damaged conductors is required, the self-locking cable sleeve can be applied rapidly to create a secure barrier that offers both flame retardant wire protector performance and reliable weatherproof electrical insulation. Construction sites, event power rigging, and shipboard cable runs are additional contexts where the combination of silicone overhead line cover and self-locking cable sleeve attributes brings real operational advantages.

Technical advantages and innovation

The silicone material in this overhead line cover offers intrinsic flame retardant wire protector properties without relying solely on surface treatments. As a flame retardant wire protector, the silicone formulation is engineered to meet or exceed industry-rated flammability standards while maintaining mechanical integrity under thermal stress. The silicone overhead line cover also exhibits superior dielectric strength and low electrical conductivity, enhancing its role as a weatherproof electrical insulation barrier that helps prevent shorts and arc incidents.

Volsun’s product leverages material science innovation to combine elasticity and structural resilience. The silicone overhead line cover remains flexible at low temperatures and resists embrittlement, while retaining tensile strength at elevated temperatures. This durability contributes to long service life in outdoor installations, where repeated thermal cycling can otherwise degrade conventional materials. The weatherproof electrical insulation character of the silicone overhead line cover includes UV stabilization, ozone resistance, and hydrophobic surface behavior that reduces water ingress and contamination build-up.

Installation efficiency is another area of innovation. The self-locking cable sleeve mechanism integrates a positive locking geometry that secures the cover quickly and reliably. The self-locking cable sleeve design reduces the need for additional sealing compounds and minimizes installer exposure to energized conductors during deployment. The self-locking cable sleeve offers consistent clamping force across a range of cable sizes and can be specified for different cross-sectional profiles, enabling custom size production to meet unique project needs.

Customization and manufacturing capability

Volsun provides custom size options to match project specifications. The custom size options allow purchasers to request silicone overhead line cover dimensions tailored to specific conductor diameters, bundle configurations, or length requirements. Whether a single-phase wire run or a multi-conductor overhead harness, the silicone overhead line cover can be manufactured in the exact dimensions needed. Custom size production maintains all core properties—flame retardant wire protector performance, weatherproof electrical insulation capability, and the self-locking cable sleeve’s secure engagement.

Manufacturing controls ensure consistent material formulation, precise dimensional tolerances, and thorough quality inspection. Volsun applies stringent production testing so that each silicone overhead line cover meets the intended flame retardant wire protector standards and weatherproof electrical insulation criteria. The self-locking cable sleeve functionality is tested across multiple cycles to verify locking reliability and to ensure the sleeve remains effective over the product’s service life.

Compliance, testing, and safety

The silicone overhead line cover is designed with regulatory compliance and industry testing in mind. Volsun conducts flammability assessments, dielectric testing, UV exposure trials, and environmental aging protocols to validate the product’s flame retardant wire protector and weatherproof electrical insulation claims. The self-locking cable sleeve system undergoes mechanical endurance tests to confirm secure performance under vibration and climatic stress. These validation steps help utilities, contractors, and specifiers rely on the silicone overhead line cover as a proven component in risk mitigation and safety plans.

Benefits summary

- Reliable flame retardant wire protector performance that reduces fire propagation risk.

- Robust weatherproof electrical insulation to shield conductors from moisture, UV, and contaminants.

- Rapid installation via a secure self-locking cable sleeve that eliminates auxiliary hardware.

- Custom size options to fit diverse cable bundles and project requirements.

- Long-term durability and material resilience across wide temperature ranges.

Volsun’s Custom Size Weatherproof Flame Retardant Self Locking Silicone Overhead Line Cover for Electrical Wire is a tailored protection solution that addresses the core needs of modern electrical infrastructure. Combining the proven advantages of a silicone overhead line cover with certified flame retardant wire protector properties, dependable weatherproof electrical insulation, and a practical self-locking cable sleeve design, this product reduces installation time and enhances safety in demanding outdoor and temporary electrical applications. For projects that require custom size specifications, high-performance material properties, and installation simplicity, Volsun’s silicone overhead line cover delivers a dependable, engineered solution.