PTFE vs. FFKM
PTFE 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 (12, in this case) are not shown.
For each property being compared, the top bar is PTFE and the bottom bar is FFKM.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 2.1 to 2.3 | |
| 2.0 |
| Elongation at Break, % | 75 to 300 | |
| 170 |
| Maximum Temperature: Mechanical, °C | 260 to 270 | |
| 280 |
| Strength to Weight: Axial, points | 1.7 to 3.2 | |
| 2.3 |
| Strength to Weight: Bending, points | 5.7 to 8.7 | |
| 7.2 |
| Tensile Strength: Ultimate (UTS), MPa | 13 to 25 | |
| 16 |