Comparison

General Purpose High-Temperature Vulcanizing Silicone vs ABS

A side-by-side comparison of High-Temperature Vulcanizing (HTV) Silicone Rubber and Acrylonitrile Butadiene Styrene.

Property

General Purpose High-Temperature Vulcanizing Silicone

ABS

Physical

Density

1.12 - 1.52 g/cm³

1.04 – 1.07 g/cm³

Water Absorption (24h)

0.1 - 0.5 %

0.20 – 0.45 %

Transparency

Opaque to Translucent

Opaque

Shrinkage

1.0 - 3.0 %

0.4 – 0.9 %

Specific Gravity

—

1.05

Surface Finish

—

Matte to glossy

Mechanical

Young's Modulus

0.001 - 0.01 GPa

1.8 – 2.5 GPa

Tensile Strength

3 - 10 MPa

40 – 50 MPa

Elongation at Break

200 - 700 %

10 – 50 %

Impact Strength (Izod)

N/A

200 – 400 J/m

Flexural Strength

—

60 – 80 MPa

Hardness (Rockwell R)

—

100 – 115

Thermal

Glass Transition Temperature

-100 to -50 °C

105 °C

Melting Point

N/A

Amorphous (no true Tm)

Continuous Service Temperature

-60 to 230 °C

70 – 90 °C

Heat Deflection Temperature

N/A

85 – 100 °C

Thermal Conductivity

—

0.17 W/m·K

CTE

—

80 – 100 × 10⁻⁶ /K

Electrical

Dielectric Constant

2.8 - 3.0

2.7 – 3.2

Volume Resistivity

10^13 - 10^15 Ohm-cm

10¹⁶ Ω·cm

Dielectric Strength

15 - 30 kV/mm

15 – 20 kV/mm

Surface Resistivity

—

10¹⁵ Ω

Chemical resistance

Acids

Poor

—

Bases

Poor

Good

Solvents

Poor resistance to hydrocarbon solvents; swells

—

UV Resistance

Excellent

Poor (unless stabilized)

Acids (dilute)

—

Good

Alcohols

—

Good

Oils & Greases

—

Fair

Gasoline

—

Poor

Acetone

—

Attacks / dissolves

Weathering

—

Poor without stabilizers

Sustainability

Recyclability

Very Limited

Recyclable (mechanical)

Recycling Code

N/A

7 (Other)

Carbon Footprint

High (energy intensive production)

~3.1 kg CO₂e / kg

Bio-based Content

—

0 %