Silicone Rubber High Medium Voltage Power Accessories Wrap Insulation Overhead Line Cover
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Product Attributes
- Customization
- Available
- Application
- Automotive Harnessing, Communication industry, Machine Protection, Wire & Cable Protection, Insulation Protection
- Color
- Yellow/Green/Red/Gray
- Model NO.
- size 12mm, 12kv, red
- Flexibility
- Flexible
- Inner Diameter
- Customized
- Material
- Rubber
- Maximum Voltage
- >100KV
- Outer Diameter
- Customized
- Thermal Rating
- 250 250
- Thickness
- Customized
- Item
- Manufacturing Silicone Rubber Overhead Line Cover
- Sample
- Free
- Delivery
- 2 Weeks
- Voltage
- 10kv, 35kv, 110kv, 220kv
- Type
- Insulation Sleeve & Tube
- Chemistry
- Organic Insulation
- Classification
- Hybrid Insulation Materials
- Certification
- ISO9001
- Brand
- Volsun
- Transport Package
- Standard Exporting Package
- Specification
- size 12mm, 12kv, red
- Trademark
- volsun
- Origin
- China
- HS Code
- 85479090
- Production Capacity
- 100000meter/Week
- Package Size
- 22.00cm * 22.00cm * 10.00cm
- Package Gross Weight
- 1.000kg
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 Silicone Rubber High Medium Voltage Power Accessories Wrap Insulation Overhead Line Cover
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Product Description
mechanical properties, hydrophobicity and hydrophobic migration, and excellent high and low temperature resistance. It can be used continuously
under the temperature of-50℃~+150℃. It is convenient and simple to install, saves labor and time, and is used for insulation protection of cables and wires to increase the safe distance between objects and cables
*Long service life, anti-aging, and corrosion resistance
*Simple installation, no fire, power outage construction time is short




Item | Typical Data | Test Method |
Electrical Strength Test | ≥20kV/mm | GB/T 1408.1-2006 |
Volume Resistivity | ≥1×1014Ω·cm | GB/T 1410-2006 |
Dielectric Constant | 2~3 | GB/T 1409-2006 |
Shore Hardness | 70±5A | GB/T 531 |
Mechanical Property | ||
Before heat ageing | ||
Tensile Strength | ≥4.0MPa | GB/T 528-2009 |
Elongation at break | ≥200% | GB/T 528-2009 |
After Heat aging (180℃, 7d) | ||
Tensile Strength Change | ±30% | GB/T 528-2009 |
Elongation Change | ±30% | GB/T 528-2009 |
LowTemperature Elongation(-15℃, 2h) | ≥20% | GB/T 2951.4-1997 |
Low Temperature Flexibility(-50℃, 4h) | Nocracks | UL224-2004 |
High Temperature Crack Resistance(155℃, 2h) | Nocracks | GB/T2951.6-1997 |
Nominalcross-sectionalarea(mm²) | Recommended Inner Diameter of ConductorCover(mm) |
50~70 | 12 |
95~120 | 17 |
150~185 | 20 |
210~300 | 24.2 |
400 | 30 |
500 | 32 |
630 | 35 |
800 | 39.8 |
Voltage(KV) | ≤10kV | ≤35kV | ≤110kV | ≤220kV |
Wallthickness | 2.0±0.3mm | 3.0±0.4mm | 4.0±0.5mm | 6.0±1.0mm |

experience in and has participated in national key projects. It has factories of more than 25000 square meters in Suzhou and Yangzhou. Popular sizes are in stock, and free samples are supported to provide customers with one-stop service.
Suzhou Volsun Electronic Technology Co., Ltd. is a well-known manufacturer of protective products for power communication equipment in Asia. Its main products are cold shrink tubes, fiberglass sleeve, thermal potting compound, thermal pads, heat shrink tube .overhead line cover, self fusing tape, shaft grounding ring, PET braided sleeve, identification products, ect.






>We have a variety of products such as cold shrink tubing made of various materials (silicone cold shrink tubing, EPDM cold shrink tubing), fiberglass sleeves, overhead line tubing, thermal pads, potting compound, etc. More than 100 types of heat shrink tubing: PE heat shrink tubing, IPVDF heat shrink tubing, EPDM heat shrink tubing,PTFE heat shrink tubing ...
>The company has the most complete range of domestic insulating tubing products such as heat shrink tubing, the best product quality of cold shrink tubing, and the most price competitiveness in the industry.
>We are among the top ten in China in the sales of cold shrink tubing, protective sleeves and insulating tapes.
* We have professional R&D team and service team to provide you with efficient project solutions, quick response, etc.
* We have a number of quality system certificates and product testing certificates, such as: UL, ISO, IATF, REACH, ROHS. We meet international quality standards.
* We have participated in large-scale exhibitions in various places, have a certain brand awareness, and have in-depth cooperation with more than 6000+ customers around the world, contributing to the development of the industry.
* We have ample storage space, some product modles are in stock all year round, and we support short-term large-volume orders with fast shipment and timely delivery.
* We have a variety of shipping methods, including Sea freight, air freight, express, ect. Customized packaging can be provided accroding to customer requirememts.
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.
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.
A: All goods will be packed in cartons and loaded on pallets. Special packing methods are acceptable when needed.
A: It depends on the model, we produce more than 1500 tons of rubber materials per month.
A1: We have ISO9001:2015 ,IATF16949:2016, ISO14001:2015 ,ISO45001:2018 certified
A2: We have various rubber compounds approved by UL, ROHS and REACH.
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.
A: Yes, we accept customization and can produce products in different sizes, packaging, colors according to requirements.
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
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