Flexible pipes, tubes, hoses and fittings therefor (including valves), and fittings for rigid pipes, all non-metallic; seals, sealants and fillers; sealing profiles (non-metallic -); insulation and barrier articles and materials; unprocessed and semi-processed materials, not being designed for a specific use, included in this class, namely, polyester, mineral fibres, elastomers, cellulose, fibres impregnated with artificial resins; resins in extruded form; semi-worked plastic substances; plastics materials in the form of sections [semi-finished products]; plastics in the form of mouldings; extruded plastics in the form of profiles for use in manufacture; non-metal couplings and joints for pipes; plastics in the form of sheets, films, blocks, rods and tubes and plastic materials in the form of strips; extruded plastic and artificial resins in the form of profiles, bars, blocks, pellets, rods, sheets and tubes for use in manufacturing; goods made of materials included in this class, in particular carrier tapes for industrial packaging, masking films, insulating waterproofing membranes and semi-processed synthetic filtering materials, cover tapes, adhesive tapes, plastic and rubber sealing strips and films, threads of plastic for soldering, rubber stoppers, seals for pipe connections; parts and accessories for all the aforesaid goods, included in this class