Molding compounds sold to manufacturers of building products and industrial products, namely, gutta percha and india rubber for use in the manufacture of building materials and electronics components; balata and balata substitutes in the form of sheets, blocks, rods, and slabs for industrial and manufacturing use; general purpose silicone rubber sealant; plastics in the form of sheets, blocks and rods, being for use in manufacture; packing material for forming seals; building materials for stopping structure heat loss, leaks, stains, surface abrasions, and water, oil, and mold and mildew intrusion and penetration, namely, silicone based building sealants, vinyl extrusions used in the manufacture of windows; material for bonding or insulating spaces in building materials, namely, thermal insulation, building insulation in nature of insulation board, acoustical insulation barrier panels, acoustic insulation and soundproofing materials for buildings; dielectric sealing materials in the nature of a flexible coating for use with electrical devices in the nature of electronic circuits, capacitors, electronic circuits and assemblies; dielectric potting materials and dielectric encapsulating materials, namely, urethane sealants for encapsulating splices in electrical wire, thermoplastic elastomer resins and thermoplastic concentrates in pellet form for use in manufacturing in a wide variety of industries, silicone based adhesives; elastomeric electric insulation for forming a seal in the nature of an electrical insulating layer; electricians' rubber electrical and electrical insulating tape; sealing compositions for expansion and control joints, for precast concrete panel for wall joints, for curtainwalls, for mullion joints, for gasketing filleting and caulking, and for glazing in the nature of a flexible sealant between joints; extruded plastic, plastic composite material, and resins fabricated of organosilicon polymers in the form of tubes, rods, and sheets all for use in manufacturing