Comparison
Automotive Sealing Grade Thermoplastic Vulcanizate (TPV) vs PEEK
A side-by-side comparison of Thermoplastic Vulcanizate (TPV) - Automotive Sealing Grade and Polyether Ether Ketone.
Physical
Density
0.90 - 0.95 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.2 %
0.15 %
Transparency
Opaque
Opaque (amber)
Shrinkage
1.5 - 2.2 %
1.1 – 1.4 %
Mechanical
Young's Modulus
0.02 - 0.04 GPa
3.6 GPa
Tensile Strength
12 - 20 MPa
100 MPa
Elongation at Break
350 - 500 %
50 %
Impact Strength (Izod)
Good
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
-45 to -30 °C
143 °C
Melting Point
N/A
343 °C
Continuous Service Temperature
-50 to 135 °C
260 °C
Heat Deflection Temperature
60 - 80 °C
160 °C
Electrical
Dielectric Constant
2.9 - 3.4
3.2
Volume Resistivity
10^13 - 10^15 Ohm-cm
10¹⁶ Ω·cm
Dielectric Strength
22 - 28 kV/mm
—
Chemical resistance
Acids
Good
Excellent
Bases
Good
Excellent
Solvents
Resists automotive fluids, water, mild acids/bases; swells in many hydrocarbon solvents
Excellent
UV Resistance
Excellent
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Recyclable (thermoplastic processing)
Recyclable (specialty)
Recycling Code
7 (Other)
7
Carbon Footprint
Moderate
~30 kg CO₂e / kg