Weather-Resistant Silicone Overhead Line Insulation Covers
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Product Highlights
- Customizable Dimensions: Size is available to customize to meet specific project requirements.
- High Performance Material: Made of silicone rubber with anti-aging, corrosion resistance, and high temperature performance.
- Easy Installation: Soft, fold-resistant design allows for simple installation without power outage.
- Certified Quality: Products certified with ISO9001, RoHS, and UL standards for reliability.
- Versatile Applications: Ideal for substation protection, railway catenary systems, and bare wire protection.
- Flexible Customization: Offers OEM/ODM services, including customization from samples, designs, and minor adjustments.
- Fast Delivery: Sample delivery in 1-2 days; regular production lead time usually 2-3 working days.
Product Attributes
- Customization
- Available
- Application
- Insulators, Bare Conductor
- Color
- Yellow/Green/Red/Gray
- Model NO.
- RUBNS-OLC
- Material
- Silicone
- Maximum Voltage
- 10kv-220kv
- Thermal Rating
- 250 250
- Item
- Manufacturing Silicone Rubber Overhead Line Cover
- Sample
- Free
- Delivery
- 2 Weeks
- Product Type
- Non-Shrinkable
- Electrical Strength Test
- 22kv/mm
- Shore Hardness
- 70A
- Tensile Strength
- 5.5MPa
- Elongation at Break
- 200%
- Wall Thickness
- 2mm~6mm
- Type
- Insulation Sleeve & Tube
- Chemistry
- Organic Insulation
- Classification
- Organic Insulating Material
- Certification
- ISO9001, RoHS
- Brand
- Volsun
- Transport Package
- Standard Exporting Package
- Specification
- ID12mm-ID39mm
- Trademark
- volsun
- Origin
- China
- HS Code
- 85479090
- Production Capacity
- 100000meter/Week
- Package Size
- 47.00cm * 47.00cm * 32.00cm
- Package Gross Weight
- 20.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Weather-Resistant Silicone Overhead Line Insulation Covers
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Product Description
Product Description
RUBNS-OLC The innovative product design, ease of installation. Use silicon rubber material, anti-aging, corrosion resistance, with good resistance to corona resistance, high temperature performance, especially suitable for the protection of the bare wire. Widely used in substation protection works and railway catenary system, a significant effect in the cross-lines.
FEATURE
• Soft and fold-resistant
• Long service life, anti-aging, and corrosion resistance
• Simple installation, no fire, power outage construction time is short
Technical data:
Voltage Rating
| Voltage(KV) | ≤10KV | ≤35KV | ≤110KV | ≤220KV |
| Thickness | 2.0±0.3mm | 2.6±0.4mm | 4.0±0.5mm | 6.0±1.0mm |
Dimension:

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 17 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. And we have gained some advanced titles such as Jiangsu famous scientific and technical corporation, China new high-tech enterprise etc. have independent intellectual property rights, 88 patents and 97 product certifications.
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.


| Trade terms | FOB, EXW, CIF, DDU, DDP, CFR |
| Payment terms | T/T, L/C, Negotiable |
| MOQ | 1 |
| Supply capability | 100000 mts per month |
| Lead time | usually 2-3 working days |
| Shipment | Express, Air, Sea |
| Port | Shanghai, Ningbo, Shenzhen |
| Sample availability | Yes |
| Sample time | usually 1-2 days |
| Packaging |
Normal: Plastic bag & Carton & Pallet Special: Customized packing |
About the Supplier
This supplier has been audited by TÜV Rheinland. Verify the report on the official TÜV Rheinland website with ID "MIC-ASR254127". Items marked "" are certified.
Company Profile
Volsun was founded in 2006, as the pioneer of cold shrink tube manufacturer in China, we keep focusing on the R & D, production and sales in insulation, sealing & protection solutions for more than 18 years.
Quality is our culture. Volsun has a modern quality management system, which has passed a series of quality system cerfification such as IATF 16949, ISO9001, etc., and we have gained some advanced titles such as Jiangsu famous scienfific and technical corporation, China new high-tech enterprise etc. Have independent intellectual property rights, 88 patents and 97 product certifications.
Up to now, Volsun cooperated with customers from 88 countries, we offer suitable sealing, waterprooof solutions for some well-know enterprises in communication, automobile, power industry etc.
Also, for our main products including cold shrink tube, heat shrink tube, silicone rubber products, fiberglass sleeve, self-fusing silicone tape, etc, we have full set of test report which approved by the third party for them, so excellent quality and performance can be guaranteed.
We will keep on innovation, and offer you a better and reliable solution for connectivity is our commitment. Volsun, your specialist in Insulation, Sealing & Protection solutions!
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- No. 402 Mudong Road, Wuzhong District, Suzhou City, China 215101
-
Plant Area
- 10050 square meters
-
Number of Employees
- 117
-
Registered Capital
- 23,000,000 RMB
-
Terms of Payment
- LC, T/T
-
International Commercial Terms(Incoterms)
- FOB, CIF
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays -
Nearest Port
- Shanghai Port
-
Minimum Order Quantity
- 1 Piece
-
Supply Chain Partners
- 26
Our Production Capability & Technical Expertise
- Main Products
- Silicone Cold Shrink Tube, EPDM Cold Shrink Tube, Silicone Rubber Overhead Line Cover, Silicone Coated Fiberglass Sleeve, Self-Fusing Silicone Tape, Heat Shrink Tube, Thermal Pad, Waterproof & Insulation Protection Pad, Shaft Grounding Ring, Potting Compound
-
Customization Options
- Customization from Samples, Customization from Designs, Full Customization, Minor Customization, Flexible customization
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
Own Brand
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2006-10-13
-
Export Year
- 19 Years
-
Main Markets
- North America, South America, Europe, Southeast Asia/ Mideast, East Asia(Japan/ South Korea), Australia, Domestic, South Asia
-
Number of Foreign Trading Staff
- 7
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- Yes
Our Certifications, Standards & Industry Recognition
-
Management System Certification
- ISO45001:2018, ISO14001
-
Product Certification
- UL
FAQ
- Can the size be customized?
- Yes, the size is available to customize to fit specific application needs.
- What material is used for the insulation covers?
- They are made from silicone rubber, which offers anti-aging, corrosion resistance, and high temperature performance.
- What certifications do the products have?
- The products are certified with ISO9001, RoHS, and UL standards.
- What is the minimum order quantity (MOQ)?
- The minimum order quantity is 1 piece.
- What are the payment terms?
- Payment terms include T/T, L/C, and negotiable options.
- How long is the lead time for production?
- The lead time is usually 2-3 working days for regular orders.
- Is OEM or ODM service available?
- Yes, we offer OEM and ODM services, including customization from samples, designs, and minor adjustments.
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