CYG-DWT(4000) Semi-regid Heat Shrink Dual Wall Tubing
Category: Heat Shrink Busbar Sleeving
Material: Outer: crosslinked modified semi-rigid polyolefin resin
Inner layer: hot melt adhesive
Shrink ratio: 4: 1
Features:
• higher shrink ratio, for the quilt was larger diameter coverage;
• Transparent;
• Semirigid polyolefin material, higher mechanical properties and wear resistance, perform stress harness connector and terminal solutions at an excellent abrasion resistance and protection;
• thicker layer of hot-melt adhesive, having excellent sealing performance, effectively resist fluid and moisture intrusion;
• Excellent oil resistance, particularly suitable for automotive interior environments;
• Operating temperature: -40 ℃ ~ + 130 ℃, applicable to a wider temperature range;
• Start shrink temperature: 110 ℃, full recovery temperature: 135 ℃.
Applications: This product is designed for automotive wire harness and piping requirements and specific design, it can be widely used with visual requirements of a variety of automotive wiring harness insulation seals, and other lines and terminals at the resumed indirect local stress relief and abrasion performance protection.
| Item | Test Method | Specifications | Test Value |
| Operation Temperature Range | ASTM D 2671 | 40ºC to 130ºC | |
| Shrink Temperature | Company standard | 110 ºC --135 ºC for jacket | |
| Tensile Strength | ASTM D 2671 | ≥10.3 MPa | 18.87 MPa |
| Longitudinal Change | ASTM D 2671 | 0 to -10 % | 5% |
| Elongation at Break | ASTM D 2671 | ≥250% | 330% |
| Aging at 168h，175℃±2℃ | ASTM D 3032 | No cracking | Pass |
| Water Absorption | ASTM D 570 | ≤1.0 % | 0.5% |
| Volume Resistance | ASTM D 2671 | ≥1.0 x 1012 (Ω.cm) | 9.0 x 1014 (Ω.cm) |
Size(mm):
| Type | As supplied | After recovery | ||
| Min ID(mm) | Max ID(mm) | Adhesive wall (mm) | Total wall(mm) | |
| CB- 4000-1 | 5.72 | 1.27 | 0.56 | 1.20 |
| CB- 4000-2 | 7.44 | 1.65 | 0.76 | 1.52 |
| CB- 4000-3 | 10.85 | 2.41 | 1.02 | 1.91 |
| CB- 4000 -4 | 17.78 | 4.45 | 1.37 | 2.41 |
| Item | Test method | Indicator | Values |
| Longitudinal length change rate | ASTM D2671 | 0-10% | 5% |
| Tensile strength | ASTM D2671 | ≥10.3MPa | 18.87MPa |
| Elongation at break | ASTM D2671 | ≥250% | 330% |
| Thermal aging | 175℃±2℃，168h | Without dripping, flowing or crack | Qualified |
| Water absorption | ASTM D570 | ≤1.0% | 0.5% |
| Volume resistivity | ASTM D2671 | ≥1×1012Ω•㎝ | 9.0×1014Ω•㎝ |
