Comparison
Automotive Hose Grade Ethylene Propylene Diene Monomer (EPDM) vs PETG
A side-by-side comparison of Ethylene Propylene Diene Monomer (EPDM) - Automotive Hose Grade and Polyethylene Terephthalate Glycol.
Physical
Density
0.88 - 0.92 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.2 %
0.13 %
Transparency
Opaque
Transparent
Shrinkage
1.2 - 2.0 %
0.2 – 0.5 %
Mechanical
Young's Modulus
0.015 - 0.03 GPa
2.1 GPa
Tensile Strength
8 - 18 MPa
50 MPa
Elongation at Break
400 - 600 %
120 %
Impact Strength (Izod)
N/A
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
-55 to -45 °C
80 °C
Melting Point
N/A
—
Continuous Service Temperature
-40 to 150 °C
65 °C
Heat Deflection Temperature
N/A
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
2.4 - 2.9
3.3
Volume Resistivity
10^14 - 10^16 Ohm-cm
10¹⁴ Ω·cm
Dielectric Strength
25 - 35 kV/mm
—
Chemical resistance
Acids
Good
Good
Bases
Good
Fair
Solvents
Resists water, steam, antifreeze; Poor resistance to hydrocarbon oils
—
UV Resistance
Excellent
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Limited
Recyclable
Recycling Code
N/A
1
Carbon Footprint
Moderate
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %