4:1 Dual Wall Black Semi-Rigid Polyolefin Heat Shrink Tubing
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Model: CYG-DWT(RO)
Material
Exterior layer: irradiated cross-linked modified polyolefin
Inner layer: modified polyamide hot-melt adhesive
Shrink ratio: 4:1
Applications
The dual wall black semi-rigid polyolefin heat shrink tubing has an excellent sealing performance, diesel resistance and insulation performance that is compliant with RoHS standards, and used to protect a variety of automotive wire harnesses. The continuous operating temperature of this dual wall heat shrink tubing is -40℃~125℃, and the shrink temperature is 100℃~150℃.
| Size | As supplied | After recovery | |
| ID (mm) | ID (mm) | Total wall (mm) | |
| 5.7 | ≥5.7 | ≤1.27 | 1.45±0.30 |
| 7.4 | ≥7.4 | ≤1.65 | 1.55±0.30 |
| 11.0 | ≥11.0 | ≤2.4 | 2.35±0.50 |
| 14.0 | ≥14.0 | ≤3.0 | 2.35±0.50 |
| 17.8 | ≥18.3 | ≤4.35 | 2.35±0.50 |
| Item | Test methods | Requirement |
| Operation temperature | Company standard | -40℃-125℃ for jacket |
| Shrink temperature | ASTM D2671 | 110℃ |
| Tensile strength | ASTM D638 | ≥10.4MPa |
| Elongation at break | ASTM D638 | ≥200% |
| Cold shock | ASTM D745，-40±2℃ | No cracking |
| Dielectric strength | ASTM D2671 | ≥19.7kv/mm |
| Volume resistance | ASTM D876 | ≥1×1012Ω.cm |
| Tensile strength after aging | ASTM D638 | ≥7.3MPa |
| Elongation at break after aging | ASTM D638 | ≥100% |
| Dielectric strength after aging | ASTM D2671 | ≥15.8kv/mm |
| Softening point of melt liner(℃) | Company standard | 110±5 |
| Sealing | TL82324 | ≥1×108 |
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