Rubber; Synthetic Rubber; Substitutes for unprocessed and semi-processed rubber; Packing material; Insulating paint; Insulating coatings; Insulating materials; Stopping materials, namely, stuffing of rubber, stuffing of plastic; Guttapercha; Semi-processed plastics; Semi-processed resins; Extruded plastics in the form of films, sheets, tubes, bars, rods, blocks, and pellets; Plastics in extruded form for use in manufacture; Flexible pipes, not of metal