| Certification: | RoHS, ISO, Reach |
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| Color: | Black/Red/Blue/Green/White |
| Usage: | Electric Wire, Insulators |
| Samples: |
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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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Material: Cross-linked modified polyolefin
Operating temperature: -55ºC~135ºC
Minimum shrink temperature: 70ºC
Minimum fully recovery temperature: 120ºC
Shrink ratio: 2:1, 3:1, 4:1
Features:
Application: Widely used in electronics, subways, buildings, public facilities, and more.
Company name: Shanghai Wellco International Limited
| 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 | |
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 offer customization options to meet specific customer requirements. We can develop products with special requirements and carry out production according to ISO9001 and IATF16949 quality management system standards. This ensures the stability and reliability of our product quality.
Shanghai Wellco International Limited is a professional manufacturer based in Shanghai, China. Since 2017, we have been specializing in the production and sales of special heat shrink tubes and other radiation crosslinking insulation materials. With over 20 years of experience in insulation, our founder has established a reputation for delivering high-quality products.
We prioritize quality and ensure that every product meets our standards. Before mass production, we always provide a pre-production sample for approval. Additionally, a final inspection is conducted before shipment to guarantee the quality of our products.
At Shanghai Wellco International Limited, we offer a variety of products including:
When it comes to purchasing heat shrink tubes and insulation materials, there are several reasons why you should choose us:
We offer a range of services to meet your needs:
Choose Shanghai Wellco International Limited for all your heat shrink tube and insulation material needs. Contact us today to learn more!
Suppliers with verified business licenses
Audited Supplier 
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