| Customization: | Available |
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| Certification: | RoHS, ISO, Reach |
| Color: | Black/Red/Blue/Green/White |
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Shanghai Wellco International Limited presents a high-quality cross-linked modified polyolefin material that is perfect for various applications. With an operating temperature range of -55ºC to 135ºC, this material is designed to withstand extreme conditions.
Featuring a shrink ratio of 2:1, 3:1, and 4:1, our product provides excellent insulation, heat resistance, and voltage performance. It is also soft and flexible, making it easy to work with.
Our material is not only reliable but also environmentally friendly. It is halogen-free, emits low smoke, and complies with "RoHS" and "REACH" regulations. Additionally, it meets the UL224 VW-1 flammability standard, ensuring safety in various applications.
Whether you need it for electronics, subways, buildings, or public facilities, our cross-linked modified polyolefin material is the perfect choice. Its wide range of applications makes it a versatile solution for any project.
Trust Shanghai Wellco International Limited for all your material needs. Contact us today to learn more about our high-quality products.
| Property | Requirement | Test method | Typical data |
| Longitudinal shrinkage | ≤10% | ASTM D 2671 | ≤5% |
| Tensile strength | ≥10.4 MPa | ASTM D 2671 | ≥12 MPa |
| Elongation at break | 200% min. | ASTM D 2671 | ≥400% |
| Tensile strength after ageing(175ºC,168hrs) | ≥7.3 MPa | ASTM D 2671 | ≥10.4 MPa |
| Elongation after ageing | 100% min. | ASTM D 2671 | ≥300% |
| (175ºC,168hrs) | |||
| Heat shock(250ºC,4hrs) | No crack | ASTM D 2671 | No crack |
| Low-temperature | No crack | ASTM D 2671 | No crack |
| flexibility(-55ºC,4hrs) | |||
| Dielectric voltage withstand | 2500V,60sec, no breakdown | ASTM D 2671 | No breakdown |
| Dielectric strength | 19.7 KV/mm min. | ASTM D 2671 | ≥ 25 KV/mm |
| Volume resistivity | ≥1012 Ω•cm | ASTM D 876 | ≥1014 Ω•cm |
| Corrosion | No corrosion | ASTM D 2671 | No corrosion |
| Flammability | VW-1 | UL224 | pass |
| Size | ID as supply(mm) | After recovered(mm) | ||
| Inside diameter | ID(Max) | Wall Thickness | ||
| 2:1 | ||||
| 3/64 | Ф1.2 | 1.2 | 0.6 | 0.45±0.08 |
| 1/16 | Ф1.6 | 1.6 | 0.8 | 0.45±0.08 |
| 3/32 | Ф2.4 | 2.4 | 1.2 | 0.50±0.08 |
| 1/8 | Ф3.2 | 3.2 | 1.6 | 0.50±0.08 |
| 3/16 | Ф4.8 | 4.8 | 2.4 | 0.50±0.08 |
| 1/4 | Ф6.4 | 6.4 | 3.2 | 0.65±0.08 |
| 5/16 | Ф7.9 | 8 | 4 | 0.65±0.08 |
| 3/8 | Ф9.5 | 9.5 | 4.8 | 0.65±0.08 |
| 1/2 | Ф12.7 | 12.7 | 6.4 | 0.65±0.08 |
| 5/8 | Ф15.9 | 16 | 8 | 0.75±0.08 |
| 3/4 | Ф19.1 | 19.1 | 9.5 | 0.75±0.08 |
| 1 | Ф25.4 | 25.4 | 12.7 | 0.90±0.10 |
| 1 1/4 | Ф31.8 | 31.8 | 15.9 | 0.95±0.10 |
| 1 1/2 | Ф38.1 | 38.1 | 19.1 | 1.00±0.10 |
| 2 | Ф50.8 | 50.8 | 25.4 | 1.15±0.10 |
| 3:1 | ||||
| 1/16 | Ф1.5/0.5 | 1.5 | 0.6 | 0.40±0.10 |
| 3/32 | Ф2.4/0.8 | 2.4 | 0.8 | 0.45±0.10 |
| 1/8 | Ф3.0/1.0 | 3 | 1 | 0.55±0.10 |
| 3/16 | Ф4.8/1.6 | 4.8 | 1.6 | 0.55±0.10 |
| 1/4 | Ф6.0/2.0 | 6 | 2 | 0.60±0.15 |
| 3/8 | Ф9.0/3.0 | 9 | 3 | 0.70±0.15 |
| 1/2 | Ф12/4 | 12 | 4 | 0.70±0.15 |
| 3/4 | Ф18/6 | 18 | 6 | 0.80±0.20 |
| 1 | Ф24/8 | 24 | 8 | 1.10±0.20 |
| 1 1/2 | Ф39/13 | 39 | 13 | 1.20±0.20 |
| 4:1 | ||||
| Ф4/1 | 4 | 1 | 0.90±0.10 | |
| Ф6/1.5 | 6 | 1.5 | 0.90±0.10 | |
| Ф8/2 | 8 | 2 | 0.90±0.10 | |
| Ф12/3 | 12 | 3 | 1.00±0.10 | |
| Ф16/4 | 16 | 4 | 1.00±0.10 | |
| Ф20/5 | 20 | 5 | 1.00±0.10 | |
| Ф24/6 | 24 | 6 | 1.20±0.10 | |
| Ф32/8 | 32 | 8 | 1.20±0.20 | |
| Ф40/10 | 40 | 10 | 1.20±0.20 | |
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 resistance, chemical resistance, EMI protection, and mechanical protection for wires and cables.
With a strong technical force and advanced production equipment, we offer heat shrink tubes and insulation tubes made from various materials such as modified PE, PVDF, FEP, EPDM, Silicone, FKM, FEP, PTFE, and more. Our products find 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 passed UL certification, RoHS, and REACH standards.
We are capable of producing customized products or developing products with special requirements based on customer needs. Our production adheres to ISO9001 and IATF16949 quality management system standards, ensuring the stability and reliability of 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 a focus on 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%).
We prioritize quality and ensure it through various measures:
Our product offerings include:
When you choose to buy from us, you benefit from:
We offer the following services:
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