17 Packing, stopping and insulating materials, namely, thermally insulating, thermally conducting, electrically insulating and/or electrically conducting materials, namely, mica insulators in combination with one or more of the following; thermally paste, ceramic, polymids films and elastomere with thermally conductive fillers for electromechanical, electric or electronic apparatuses, instruments and elements, namely, transistors, semi-conductors, data processors, and computers, all materials being in the form of sheets, foils, bands, cords, bars, rods, strips, tapes, plates, laminas, discs, washers, caps, tubes, bushings and/or blocks and as paste; goods made from rubber, gutted-perch, gum asbestos, and plastic, namely, caps, tubes, foils and films for insulating semi-conductor devices, transistors and data processors; [extruded plastics in block, sheet rod and pellet form for use in further manufacturing; ]electrical ceramic insulators