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SBR Rubber vs. FKM Rubber

Both SBR rubber and FKM rubber are thermoset elastomers (rubber). There are 8 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SBR rubber and the bottom bar is FKM rubber.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 1.1
1.8
Elongation at Break, % 530
300
Glass Transition Temperature, °C -30
-20
Limiting Oxygen Index (LOI), % 18
51
Maximum Temperature: Mechanical, °C 100
220
Strength to Weight: Axial, points 3.4
1.1
Strength to Weight: Bending, points 11
4.7
Tensile Strength: Ultimate (UTS), MPa 14
7.5