Unprocessed and semi-processed rubber, gutta-percha, gum, asbestos, mica and substitutes for all these materials; plastics and resins in extruded form for use in manufacture; packing materials or rubber or plastics, insulating materials; non-metal couplings and connectors for flexible and rigid pipes and hoses; flexible connectors for connecting pipes, hoses and flexible tubing, not of metal; flexible pipes, tubes and hoses, not of metal; sealing rings for use as pipe connection seals; parts ...