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PAR vs. NBR Rubber

PAR belongs to the thermoplastics classification, while NBR rubber belongs to the thermoset elastomers (rubber). There are 9 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 PAR and the bottom bar is NBR rubber.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 1.2
1.3
Elongation at Break, % 50
380
Glass Transition Temperature, °C 190
-30
Specific Heat Capacity, J/kg-K 1200
1350
Strength to Weight: Axial, points 16
3.9
Strength to Weight: Bending, points 31
12
Tensile Strength: Ultimate (UTS), MPa 67
18
Thermal Conductivity, W/m-K 0.18
0.25
Thermal Diffusivity, mm2/s 0.13
0.15