| Customization: | Available |
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| Application: | Insulators |
| Color: | Black, Red, Yellow, Blue, Green |
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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 | |
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, and PTFE. Our 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 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.
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