4:1 Dual Wall Heat Shrink Tubing (Item ZH52, Adhesive Lined Tubing, Offer Red / Green / Yellow Color)
Application4:1 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 featuresThe 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 chart 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 |
4:1 Dual wall heat shrink tubing technology index 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 |
Hot-melt adhesive technology index 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 |