The thermal conductivity of silicone rubber is typically 0.12 to 0.25[W/(m·K)], which is 23 times that of common synthetic rubber.
By filling a large amount of heat-conductive fillers, heat-conductive products with a thermal conductivity of 0.4 to 2W/(m·K) can be produced. In addition, its coefficient of volume expansion is also extremely high, approximately 6 to 8 × 10 ⁻ ⁴ ⁻ ¹, which is equivalent to 2 to 2.5 times that of ordinary synthetic rubber.