A hybrid silicone composite for high temperature insulation applications is disclosed. The hybrid silicone composite is formed of a mixture of liquid high consistency silicone rubber and solid high consistency silicone rubber and a thermally decomposable inorganic filler which are compounded together. The compounded material is then injection molded, over molded, compression molded, cast, laminated, extruded, calendered, adhered or dispensed. When the silicone composite is exposed to a high temperature, it forms an inorganic composite and maintains its insulating properties and dimensional stability.