NBR Rubber vs. PEI
NBR rubber belongs to the thermoset elastomers (rubber) classification, while PEI belongs to the thermoplastics. There are 10 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.
For each property being compared, the top bar is NBR rubber and the bottom bar is PEI.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 1.3 | |
| 1.3 to 1.5 |
| Elongation at Break, % | 380 | |
| 3.0 to 34 |
| Glass Transition Temperature, °C | -30 | |
| 210 |
| Maximum Temperature: Mechanical, °C | 110 | |
| 170 |
| Specific Heat Capacity, J/kg-K | 1350 | |
| 1050 to 1220 |
| Strength to Weight: Axial, points | 3.9 | |
| 24 to 30 |
| Strength to Weight: Bending, points | 12 | |
| 40 to 44 |
| Tensile Strength: Ultimate (UTS), MPa | 18 | |
| 110 to 160 |
| Thermal Conductivity, W/m-K | 0.25 | |
| 0.18 to 0.23 |
| Thermal Diffusivity, mm2/s | 0.15 | |
| 0.11 to 0.14 |