Silicone rubbers are found to be useful in numerous products, applications, and processes across all industries. This is because silicone rubbers possess unique physical, chemical and mechanical properties that are unmatched by any other polymeric materials. Among the properties of silicone rubbers are low surface tension, hydrophobicity, chemical resistance, electrical insulation, resistance to weathering, stability to extreme temperatures, resistance to thermal shock, high elasticity, good tear strength, capability to seal or bond materials ofvarious natures, and so on. However, unfilled silicone rubbers usually have low mechanical, electrical and thermal conductive properties. That is why silicone rubbers are often combined with fillers such as metal powders, fumed and precipitated silica, carbon black, boron nitride and zinc oxide to improve the above-mentioned properties.