Comparison
High-Temperature Oil-Resistant Ethylene Acrylic Elastomer vs PEEK
A side-by-side comparison of Ethylene Acrylic Elastomer (AEM) and Polyether Ether Ketone.
Physical
Density
1.00 - 1.10 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.3 - 0.6 %
0.15 %
Transparency
Opaque
Opaque (amber)
Shrinkage
1.5 - 2.5 %
1.1 – 1.4 %
Mechanical
Young's Modulus
0.02 - 0.05 GPa
3.6 GPa
Tensile Strength
10 - 20 MPa
100 MPa
Elongation at Break
200 - 500 %
50 %
Impact Strength (Izod)
N/A
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
-15 to 5 °C
143 °C
Melting Point
N/A
343 °C
Continuous Service Temperature
-40 to 175 °C
260 °C
Heat Deflection Temperature
N/A
160 °C
Electrical
Dielectric Constant
5.5 - 6.5
3.2
Volume Resistivity
10^10 - 10^12 Ohm-cm
10¹⁶ Ω·cm
Dielectric Strength
10 - 15 kV/mm
—
Chemical resistance
Acids
Good
Excellent
Bases
Good
Excellent
Solvents
Good resistance to petroleum oils, greases, and automotive fluids; Poor resistance to aromatic hydrocarbons
Excellent
UV Resistance
Good
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Limited
Recyclable (specialty)
Recycling Code
N/A
7
Carbon Footprint
Moderate to High
~30 kg CO₂e / kg