DUWAI HSWH-B4X 4:1 Semi-Rigid Heat-Shrink Dual-Wall Tube for Automotive Wire Harnesses - Superior Protection and Durability
HSWH-B4X semi-rigid double-wall tube for automotive wire harnesses is composed of polyolefin and hot meltadhesive double layer. The outer layer is semi-rigid polyolefin material with high wear resistance and strength. Theinner laver of hot melt adhesive has low melting point, can buffer mechanical strain and has strong sealing propertyProducts with high rate shrinkage and wear resistance characteristics, widely used in electronic equipment wireconnection, automotive wiring harness, home appliance wiring harness, wire and cable branch, metal pipeline, wireand cable repair, submersible pump wiring and other need to seal occasions.
Product features
| Heat shrinkage ratio:4:1 | High rate shrinkage,UV resistance |
| Initial shrinkage temperature:≥+70℃ | Environmental standard:RoHS |
| Full shrinkage temperature:≥+125℃ | Standard color:Black(tenstandard colors are available) |
| Operating temperature:-45C~+125℃ |
Outer technical indicators
| Performance | Index | Experimental methods |
| Tensile strength (MPa) | ≥10.4 | ASTM D 2671 |
| Elongation at break (%) | ≥200 | ASTM D 2671 |
| Tensile strength after aging (Mpa) | ≥7.3 | 158°℃×168h |
| Elongation at break after aging (%) | ≥100 | 158℃×168h |
| Axial rate of change (%) | -8~+8 | ASTM D 2671 |
| Flame retardancy | pass | ASTM D 2671B |
| Thermal shock | No cracks,no dripping | ASTM D 2671(250℃×4h) |
| Cold bending flexibility | No crack | ASTM D 2671(-40℃/4h) |
| Water absorption (%) | ≤0.50 | ASTM D 2671B |
| Breakdown strength (kV/mm) | ≥15 | IEC 60243 |
| Volume resistivity(2/cm) | ≥10v¹⁴Ωcm | IEC 60093 |
Hot melt adhesive specifications
| Performance | Index | Experimental methods |
| Softening point (℃) | 95±5 | ASTM E 28 |
| Water absorption (%) | <0.2 | ASTM D 570 |
| Peel strength(PE)(N/25mm) | ≥120 | ASTM D 1000 |
| Peel strength(A1)(N/25mm) | ≥80 | ASTM D 1000 |
Product specifications
| Specification | Supplied inner diameter (mm) | Complete contraction (mm) | Standard packaging M/root | |||
| Inch | mm | Inner diameter | Total wall thickness | The adhesive layer has a thick wall | ||
| 2/13 | 4.0 | ≥4.0 | ≤0.95 | 1.40±0.30 | 0.60±0.20 | 1.22 |
| 1/4 | 6.0 | ≥6.0 | ≤1.27 | 1.70±0.30 | 0.80±0.20 | 1.22 |
| 5/16 | 8.0 | ≥8.0 | ≤1.65 | 2.00±0.30 | 0.95±0.20 | 1.22 |
| 2/5 | 10.0 | ≥10.0 | ≤2.00 | 2.30±0.40 | 1.10±0.20 | 1.22 |
| 1/2 | 12.0 | ≥12.0 | ≤2.41 | 2.45±0.40 | 1.20±0.20 | 1.22 |
| 3/4 | 18.0 | ≥18.0 | ≤4.45 | 2.60±0.40 | 1.34±0.30 | 1.22 |
