4:1 Dual Wall Heat Shrink Tubing (Item ZH52, Adhesive Lined Tubing, Offer Red / Green / Yellow Color)
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4:1 Dual wall heat shrink tubing is made of soft flame retardant polyolefin and hot-melt adhesive double layers without any harmful pollutants. The outer layer is polyolefin insulation flame retardant material and can provide insulation protection, wear resistance and anti-corrosion. The inner one is hot-melt adhesive and could avoid water and air leakage.
The product has a higher shrinkage rate and has a wide application range including insulation and sealing protection for various wire harness, marine wires and cables, and binding and fixing of metal tubing.
Main features| The lowest temperature of beginning shrinking | 70℃ |
| The lowest temperature of ending shrinking | 125℃ |
| Operating temperature | -45℃~125℃ |
| Heat shrinking ratio | 4:1 |
| Environmental standard | RoHS |
| Major material | EVA |
| Standard color | black (other colors can be ordered) |
| Specification | Inner diameter before shrinking | Size after shrinking(mm) | Package standard | |||
| Inner diameter Minimum(mm) | Inner diameter maximum | Total wall thickness | Adhesive layer wall thickness | Meter/coil or piece | ||
| Φ4.0 | 4.0 | 1.0 | 1.0±0.15 | 0.4±0.15 | 200 | |
| Φ6.0 | 6.0 | 1.5 | 1.1±0.15 | 0.4±0.15 | 100 | |
| Φ8.0 | 8.0 | 2.0 | 1.2±0.15 | 0.5±0.15 | 1.22 | |
| Φ12.0 | 12.0 | 3.0 | 1.4±0.15 | 0.5±0.15 | 1.22 | |
| Φ16.0 | 16.0 | 4.0 | 1.7±0.15 | 0.6±0.15 | 1.22 | |
| Φ20.0 | 20.0 | 5.0 | 2.0±0.25 | 0.6±0.15 | 1.22 | |
| Φ24.0 | 24.0 | 6.0 | 2.1±0.25 | 0.6±0.15 | 1.22 | |
| Φ32.0 | 32.0 | 8.0 | 2.4±0.25 | 0.7±0.15 | 1.22 | |
| Φ52.0 | 52.0 | 13.0 | 2.4±0.25 | 0.7±0.15 | 1.22 | |
| Property | Index | Test method |
| Tensile strength | ≥10.4MPa | ASTM D 2671 |
| Breaking elongation | ≥300% | ASTM D 2671 |
| Tensile strength after heat aging | ≥7.3MPa | 158℃×168h |
| Breaking elongation after heat aging | ≥100% | 158℃×168h |
| The axial changing ratio | -8%～+8% | ASTM D2671 |
| Flame retardant property | Self-extinguish within 30s | SAE-AMS-DTL-23053/5 |
| Disruptive strength | ≥15 MV/m | IEC 243 |
| Volume resistivity | ≥1014Ω=cm | IEC 93 |
| Property | Test method | Index |
| Softening point | ASTM E 28 | 85±3℃ |
| Water absorption point | ASTM D 570 | ≤0.2% |
| The minimum peel strength of PE | ASTM D 1000 | ≥120N/25mm |
| The minimum peel strength of AL | ASTM D 1000 | ≥80N/25mm |
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