Shanghai APS Eco-tech Co., Ltd
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NBR black rubber foam pipe
| Item | Unit | Specification | Standard | |
| Density | Kg/m³ | ≤95 | GB/T6343 | |
| Flammability | Oxygen index | % | ≥32 | GB/T2406 |
| SDR | -- | ≤75 | GB/T8627 | |
| Conductivity factor Average temperature | -20°C | W/(m.k) | ≤0.031 | GB/T10294 |
| 0°C | ≤0.034 | |||
| 40°C | ≤0.036 | |||
| Watervapor permeability | Coefficient | g/(m.s.pa) | ≤2.8*10-11 | GB/T17146-1997 |
| Factor | -- | ≥7.0*10³ | ||
| Water absorption ratio in vacuum | % | ≤10 | GB/T17794-2008 | |
| Dimension stability 105±3°C,7d | % | ≤10 | GB/T8811 | |
| Crack resistance | N/cm | ≥2.5 | GB/T10808 | |
| Compression resilience ratio | % | ≥70 | GB/T6669-2001 | |
| Compression time 72h | ||||
| Anti-ozone | -- | Not cracking | GB/T7762 | |
| Ozone pressure 202mpa | ||||
| 200h | ||||
| Aging resistance | -- | Slightly crumpling, | GB/T16259 | |
| 150h | no cracks | |||
| Temperature | °C | -40°C--110°C | GB/T17794 | |