Provided is an insulated radiating rubber molded article that can be pre-installed in an electrical apparatus such as an LED package, can improve handling properties during attachment work, and moreover can exert superior insulating characteristics and radiating characteristics. To achieve the objective, the insulated radiating rubber molded article, which, by means of being interposed between a base and the electrical apparatus when attaching the electrical apparatus, which emits heat alongside the operation thereof, to the base, promotes radiating from the electrical apparatus and electrically insulates the electrical apparatus from the base, is characterized by having a 3D shape by means of being integrally provided with: a flat surface section disposed between the electrical apparatus and the base; and a lateral surface section disposed around the electrical apparatus.