Comparison
Extreme Chemical and Temperature Perfluoroelastomer (Kalrez) vs PLA
A side-by-side comparison of Perfluoroelastomer (FFKM - Kalrez family) and Polylactic Acid.
Physical
Density
1.9 - 2.15 g/cm³
1.24 g/cm³
Water Absorption (24h)
0.05 %
0.5 %
Transparency
Opaque
Semi-transparent
Shrinkage
1.0 - 2.0 %
0.3 – 0.5 %
Mechanical
Young's Modulus
0.03 - 0.07 GPa
3.5 GPa
Tensile Strength
10 - 20 MPa
50 – 65 MPa
Elongation at Break
100 - 250 %
6 %
Impact Strength (Izod)
N/A
16 J/m
Flexural Strength
—
80 MPa
Thermal
Glass Transition Temperature
0 to 15 °C
60 °C
Melting Point
N/A
150 – 160 °C
Continuous Service Temperature
-20 to 327 °C
45 °C
Heat Deflection Temperature
N/A
55 °C
Electrical
Dielectric Constant
2.1 - 2.2
3.0
Volume Resistivity
10^15 - 10^17 Ohm-cm
10¹⁴ Ω·cm
Dielectric Strength
15 - 20 kV/mm
—
Chemical resistance
Acids
Outstanding
Fair
Bases
Outstanding
Poor
Solvents
Outstanding resistance to virtually all chemicals and solvents
—
UV Resistance
Excellent
Poor
Alcohols
—
Fair
Hydrolysis
—
Poor
Sustainability
Recyclability
Extremely Limited
Industrially compostable
Recycling Code
N/A
7
Carbon Footprint
Very High (complex production)
~1.6 kg CO₂e / kg
Bio-based Content
—
100 %