Comparison
Oil-Resistant Nitrile Butadiene Rubber vs PEEK
A side-by-side comparison of Nitrile Butadiene Rubber (Oil-Resistant) and Polyether Ether Ketone.
Physical
Density
0.95 - 1.05 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.2 - 0.5 %
0.15 %
Transparency
Opaque
Opaque (amber)
Shrinkage
1.5 - 2.5 %
1.1 – 1.4 %
Mechanical
Young's Modulus
0.02 - 0.06 GPa
3.6 GPa
Tensile Strength
10 - 25 MPa
100 MPa
Elongation at Break
300 - 600 %
50 %
Impact Strength (Izod)
N/A
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
-40 to -20 °C
143 °C
Melting Point
N/A
343 °C
Continuous Service Temperature
-30 to 100 °C
260 °C
Heat Deflection Temperature
N/A
160 °C
Electrical
Dielectric Constant
3.5 - 4.0
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
Excellent resistance to aliphatic hydrocarbons, oils, and fuels
Excellent
UV Resistance
Fair
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Limited
Recyclable (specialty)
Recycling Code
N/A
7
Carbon Footprint
Moderate
~30 kg CO₂e / kg