Comparison
High Acrylonitrile Nitrile Butadiene Rubber (NBR) vs PETG
A side-by-side comparison of Nitrile Butadiene Rubber (NBR) - High Acrylonitrile Content and Polyethylene Terephthalate Glycol.
Physical
Density
1.00 - 1.05 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.1 - 0.3 %
0.13 %
Transparency
Opaque
Transparent
Shrinkage
1.0 - 2.0 %
0.2 – 0.5 %
Mechanical
Young's Modulus
0.03 - 0.07 GPa
2.1 GPa
Tensile Strength
15 - 25 MPa
50 MPa
Elongation at Break
200 - 400 %
120 %
Impact Strength (Izod)
N/A
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
-15 to -5 °C
80 °C
Melting Point
N/A
—
Continuous Service Temperature
-10 to 120 °C
65 °C
Heat Deflection Temperature
N/A
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
3.8 - 4.5
3.3
Volume Resistivity
10^9 - 10^11 Ohm-cm
10¹⁴ Ω·cm
Dielectric Strength
8 - 12 kV/mm
—
Chemical resistance
Acids
Good
Good
Bases
Good
Fair
Solvents
Excellent resistance to aliphatic hydrocarbons, fuels, oils, and many solvents
—
UV Resistance
Fair
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 %