| Customization: | Available |
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| Application: | Insulators |
| Color: | Black, Other Colors Can Be Customized |
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| Property | Unit | Performance requirements | Testing method | |
| Operating Temperature Range | ºC | -40~125 | UL224 | |
| Longitudinal change | % | 0~10 | ASTM D2671 /U224 | |
| Tensile strength | Mpa | ≥10.4 | ASTM D2671 | |
| Breakage elongation | % | ≥200 | ASTM D2671 | |
| Cold impact : 4H, -40±2°C | \ | No crack | UL224 | |
| Heat Shock : 4 H, 250±3°C (only jacket) | \ | No drip, no flow, no crack | UL224 | |
| Heat aging (only jacket) 168H, 175±2°C |
Tensile strength | Mpa | ≥7.3 | UL224 |
| Breakage elongation | % | ≥100 | UL224 | |
| Volume resistivity | Ohm-cm | ≥1 x 1012 | ASTM D2671 | |
| Copper corrosion | / | 158ºC,168h,Pass | UL224 | |
| water absorption | % | ≤1.0% | ASDM D570 | |
Size |
Length(mm) | As supplied (mm) | After unrestricted shrinkage (mm) | ||
| ID MIN (C) |
Preshrink seal length MIN(F) | ID MAX (D) |
total thickness (W) | ||
| 3.2 | 25 | 3.2 | 4.0 | ≤1.00 | 1.00±0.10 |
| 5.75 | 40 | 5.75 | 4.0 | ≤1.27 | 1.50±0.15 |
| 7.4 | 35 | 7.4 | 5.0 | ≤1.65 | 1.80±0.20 |
| 10.8 | 45 | 10.8 | 5.0 | ≤2.40 | 2.10±0.30 |
With 18 years of experience, Shanghai Wellco International Limited is a professional team specializing in the research and development, production, and sales of special heat shrink tubes and other radiation crosslinking materials. Our focus is on providing a wide range of products and solutions for insulation, connection, waterproofing, high temperature resistance, chemical resistance, EMI protection, and mechanical protection for wires and cables.
Our company boasts a strong technical force with 20 years of experience and advanced production equipment. We offer a variety of heat shrink tubes and insulation tubes made from materials such as modified PE, PVDF, FEP, EPDM, Silicone, FKM, FEP, and PTFE. These products find extensive applications in electronic communication, automobile, high-speed rail, electric motor, aviation, medical, and other industries. They provide insulation, water-proofing, electrostatic shielding, oil resistance, chemical resistance, and high-temperature protection. Our products have obtained UL certification, RoHS compliance, and REACH compliance.
In addition to our standard product range, we also specialize in producing customized products and developing products with special requirements according to customer needs. Our production processes adhere to the ISO9001 and IATF16949 quality management system standards, ensuring the stability and reliability of our product quality.
Shanghai Wellco International Limited is a professional manufacturer of special heat shrink tubes and other radiation crosslinking insulation materials. With over 20 years of experience in insulation, we are dedicated to providing high-quality products to our customers.
We are based in Shanghai, China and have been in operation since 2017. Our products are sold worldwide, with our main markets being North America (20.00%), South Asia (20.00%), Southeast Asia (15.00%), Western Europe (15.00%), South America (5.00%), Eastern Europe (5.00%), Mid East (5.00%), Northern Europe (5.00%), Eastern Asia (3.00%), Domestic Market (3.00%), Southern Europe (2.00%), Africa (00.00%), and Central America (00.00%). Our team consists of 5-10 dedicated professionals.
We prioritize quality and ensure that our products meet the highest standards. We conduct a pre-production sample before mass production and a final inspection before shipment to guarantee the quality of our products.
At Shanghai Wellco International Limited, we offer a wide range of products, including heat shrink tubes, heat shrink mould parts, marking sleeves, and cold shrink tubes. Our products are designed to provide effective insulation and meet various industry requirements.
When it comes to purchasing insulation materials, there are several reasons why you should choose us:
We provide the following services to our customers:
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