| Customization: | Available |
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| Certification: | RoHS, ISO, Reach |
| 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 |
Shanghai Wellco International Limited is a professional team with 18 years of experience in R&D, production, and sales of special heat shrink tubes and other radiation crosslinking materials. We specialize in providing a wide range of products and solutions for insulation, connection, waterproofing, high temperature applications, chemical resistance, EMI protection, and mechanical protection for wires and cables.
With a strong technical force 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, PTFE, and more. Our products find extensive use in electronic communication, automobile, high-speed rail, electric motor, aviation, medical, and other industries, providing insulation, water-proofing, electrostatic shielding, oil resistance, chemical resistance, and high-temperature protection.
All our products have passed UL certification, RoHS, and REACH standards, ensuring their quality and compliance with industry regulations.
We also offer customization and development of products with special requirements, adhering to ISO9001 and IATF16949 quality management system standards to guarantee the stability and reliability of our products.
Shanghai Wellco International Limited is a professional manufacturer based in Shanghai, China. Since 2017, we have been dedicated to producing and selling high-quality heat shrink tubes, heat shrink mould parts, marking sleeves, and cold shrink tubes. With over 20 years of experience in insulation materials, our founder leads a team of 5-10 professionals.
We prioritize quality and ensure it through various measures:
Our product range includes:
When it comes to purchasing insulation materials, here's why you should choose Shanghai Wellco International Limited:
We offer the following services:
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