17 Carbon fibres, other than for textile use; flexible tubing containing carbon fibres; carbon fibre; carbon fibres for use in industry; fleeces of crude fibres of carbon, being insulation; resin impregnated carbon fibre fabrics; crude fibres of carbon; fabrics of carbon fibre for use as insulation; carbon fibre reinforced synthetic resins for use in manufacture; fibreglass for insulation; fibreglass fabrics for insulation; semi-worked or semi-finishedglass reinforced resins; semi-processed resins; synthetic resins, semi-processed; artificial semi-processed resins; thermosetting resins, semi-processed; resins in extruded form; semi-processed compounds of synthetic resins; semi-finished mouldable synthetic resins; insulatory coatings of plastic resin; semi-processed synthetic polymer resins; semi-finished unsaturated polyester resins; semi-finished polyamide resins for use in manufacture; semi-processed expanded unsaturated polyester resins; acrylic resins, semi-processed; semi-processed natural resins; artificial resins in extruded form for use in manufacture; fibres impregnated with synthetic resins for insulation; thermoplastic resins reinforced with natural fibers, being semi-finished products; synthetic resins in rod form for use in manufacture; mixtures of resins with fillers for use as intermediates; semi-finished polyamide resins in the form of sheets; semi-processed thermoplastic polymer resins for use in manufacture; artificial synthetic resins, bein semi-processed; synthetic repair resins; semi-processed expanded synthetic resins; water-tight rings; non-metallic stuffing rings; non-metallic sealing rings for hose fittings; non-metallic sealing rings for pipe fittings; rings of rubber; rings of rubber for use as pipe connection seals; pipe muffs, not of metal; pipe support sleeves, being rubber; identification sleeves of rubber for tubes; non-metallic coupling sleeves for tubes; identification sleeves of plastics for tubes; rubber sleeves for protecting parts of machines; sleeves of rubber for protecting articles from damage through impact; junctions, not of metal, for pipes; non-metallic pipe fittings, being junctions; fittings, not of metal, for flexible pipes; pipe couplings and joints, not of metal; fittings, not of metal, for rigid pipes; flexible pipes, tubes, hoses, and fittings therefor, including valves, non-metallic