4X Dual-Wall Adhesive-Lined
Environmentally friendly double-wall tubing consists of a double layer of soft flame retardant polyolefin and hot melt adhesive. The outer layer of polyolefin is insulating and flame retardant, while the inner layer of hot melt adhesive buffers against mechanical strain and provides a strong seal. The main function of the product is to seal waterproof, anti-corrosion, anti-air leakage and insulation protection, high rate of contraction characteristics to meet the protection of more variable diameter components. Mainly used in all kinds of wiring harness, marine wire and cable and metal pipe need to be sealed waterproof moisture corrosion occasions sealing insulation, bundling fixed and other fields.
– Execution standard: UL approved
– Heat shrinkage ratio: 4:1
– Initial shrinkage temperature: ≥ +70℃;
– Fully contracted temperature: ≥ +125 ° C
– Use temperature: -45℃~+125℃.
– High shrinkage rate, flame retardant outer layer, UV-resistant
– Environmental protection standard: RoHS
– Standard colour: black (ten standard colours are available)
Technical Data:
| Property | Test method | Standard | Typical Performance |
|---|---|---|---|
| Tensile strength(MPa) | ASTM D2671 | ≥10.4 | 12.68 |
| Elongation(%) | ASTM D2671 | ≥200 | 448.72 |
| Tensile strength after aging(MPa) | UL224 158℃X168hr | ≥7.3 | 11.45 |
| Elongation after aging (%) | UL224 158℃X168hr | ≥100 | 390.41 |
| Flammability | ASTM D2671B | Pass | Pass |
| Dielectric strength(kV/mm) | IEC 60243 | ≥15 | 18.25 |
| Volume resistivity(Ω.cm) | IEC 60093 | ≥1X1014 | 1.86X1014 |
Adhesive:
| Property | Test method | Standard Performance |
|---|---|---|
| Water Absorption | ASTM D570 | <0.2% |
| Softening Point(℃) | ASTM E28 | 95±5 |
| Strength of pearing (PE) | ASTM D 1000 | 120N/25mm |
| Strength of pearing (AL) | ASTM D 1000 | 80N/25mm |
Execution standard: UL approved


