1.5:1 Heat Shrink Dual Wall Tubing
Model: CB- DWT (2000)
Material
Exterior layer: cross-linked modified semi-rigid polyolefin resin
Inner layer: hot-melt adhesive
Shrink ratio: 2:1, 3:1
Applications
1.5:1 heat shrink dual wall tubing is a friction resistant dual wall heat shrink tubing that is designed for automotive thermal and heat shield sleeving to protect automotive fuel pipes and brake pipes. The dual wall heat shrink tubing also features an excellent resistance to diesel and chemical corrosion, thus protecting the tubes against mechanical damage and moisture corrosion. Each size of this tubing is matched with a specific metal tubing pattern. It will quickly shrink when the temperature is higher than 115℃, and can be bent and formed when installed.
| Size | Standard (mm) | Inside diameter as supplied (mm) | Wall thickness after recovery (mm) |
| CB-DWT (2000) -5 | 3.5 | 5 | 1 |
| CB-DWT (2000) -6 | 4.76 | 6 | 1 |
| CB-DWT (2000) -8 | 6.35 | 8 | 1 |
| CB-DWT (2000)-10 | 8 | 10 | 1 |
| CB-DWT (2000)-15 | 10 | 15 | 1 |
| Item | Test method | Standard | Specifications |
| Longitudinal shrinkage | 0-10% | -2% | |
| Eccentricity | ASTM D2671 | 20% | 10% |
| Tensile strength | ASTM D2671 | ≥12MPa | 14MPa |
| Elongation at break | ASTM D2671 | 400% | 460% |
| Aging in circulating-air oven | 158.0℃±1.0℃, 168hrs | - | - |
| Tensile strength after aging | ASTM D2671 | ≥12MPa | 13MPa |
| Elongation at break after aging | ASTM D2671 | 270% | 410% |
| Deformation resistance | ASTM D746 | ≥50% | 82% |
| Impact strength | ASTM D746 | -35℃, no cracking | No cracking |
| Drop impact resistance | ASTM D746 | No cracking | No cracking |
| Cold Resistance | ASTM D746 | No cracking | No cracking |
| -35℃, 1h | |||
| Stress cracking resistance | ASTM D1693 | No cracking | No cracking |
| 50℃, 24hrs | |||
| Fluid resistance | ASTM D2671/25℃/72hrs | Sulphur acid(1.28 S.G.) | No cracking |
| Sodium hydroxide(0.1N) | No cracking | ||
| Brake oil | No cracking | ||
| Unleaded petrol | No cracking |
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