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FEP vs. FFKM

FEP belongs to the thermoplastics classification, while FFKM belongs to the thermoset elastomers (rubber). There are 6 material properties with values for both materials. Properties with values for just one material (24, in this case) are not shown.

For each property being compared, the top bar is FEP and the bottom bar is FFKM.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.1
2.0
Elongation at Break, % 300
170
Maximum Temperature: Mechanical, °C 200
280
Strength to Weight: Axial, points 2.6
2.3
Strength to Weight: Bending, points 7.6
7.2
Tensile Strength: Ultimate (UTS), MPa 20
16