| Application: | Insulators, Electrical Winding Insulation, Winding Wire Coating Insulation, Electrical Base, Shell, Motor, Insulating Varnish, Switch Baseplate |
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| Type: | Insulation Sleeve |
| Chemistry: | Organic Insulation |
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| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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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.
Backed by strong technical force and 20 years of experience, we have advanced production equipment and can supply heat shrink tubes and insulation tubes made from various materials such as modified PE, PVDF, FEP, EPDM, Silicone, FKM, FEP, and PTFE. Our products are widely used in electronic communication, automobile, high-speed rail, electric motor, aviation, medical, and other industries. They offer excellent insulation, water-proofing, electrostatic shielding, oil resistance, chemical resistance, and high-temperature resistance. Our products have also passed UL certification, RoHS, and REACH standards.
We understand that each customer may have unique requirements. Therefore, we offer customized products and can develop solutions tailored to your specific needs. Our production processes adhere to ISO9001 and IATF16949 quality management system standards, ensuring the stability and reliability of our product quality.
Choose Shanghai Wellco International Limited for all your heat shrink tube and insulation tube needs. Experience the difference in quality and performance.
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 ensure the quality of our products through a rigorous process:
When you choose Shanghai Wellco International Limited, you benefit from:
We offer the following services:
Suppliers with verified business licenses
Audited Supplier 
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