Comparison
Soft Touch Flexible Styrene-Ethylene-Butylene-Styrene vs PETG
A side-by-side comparison of Styrene-Ethylene-Butylene-Styrene (SEBS) block copolymer and Polyethylene Terephthalate Glycol.
Physical
Density
0.91 - 0.93 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.3 %
0.13 %
Transparency
Opaque to Translucent
Transparent
Shrinkage
1.0 - 2.0 %
0.2 – 0.5 %
Mechanical
Young's Modulus
0.001 - 0.05 GPa
2.1 GPa
Tensile Strength
3 - 10 MPa
50 MPa
Elongation at Break
500 - 1000 %
120 %
Impact Strength (Izod)
Good
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
-60 to -40 °C
80 °C
Melting Point
N/A (softening point around 100-150 °C)
—
Continuous Service Temperature
-40 to 100 °C
65 °C
Heat Deflection Temperature
N/A
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
2.5 - 3.0
3.3
Volume Resistivity
10^15 - 10^17 Ohm-cm
10¹⁴ Ω·cm
Dielectric Strength
20 - 30 kV/mm
—
Chemical resistance
Acids
Good
Good
Bases
Good
Fair
Solvents
Resists water, dilute acids/bases; swells in aromatic and chlorinated hydrocarbons
—
UV Resistance
Excellent
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Recyclable (thermoplastic processing)
Recyclable
Recycling Code
7 (Other)
1
Carbon Footprint
Moderate
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %