17 Rubber, gutta-percha, gum and goods made from these materials, namely, stops of rubber, rings of rubber, V-belts, vibrating buffers for industrial machinery, adhesive bands other than stationery and not for medical or household purposes; draught excluder strips, namely, non-metal weather strips for buildings; plastics in extruded form for use in manufacture; filter materials, namely, semi-finished plastics, synthetic plastic as semi-finished products in the form of foils, plates, rods, profiles, hoses, tubes, blocks, industrial coatings, namely, natural and liquid rubber; thermoplastic elastomer resins in pellet form for use in further manufacture; packing, stopping and insulating materials, namely, sheets of graphite-based material for use as gaskets, seals, packings, and heat insulators; gasket material in sheets for use in building; gasket sealer for use in plumbing; weatherstripping sealants in the nature of caulk; soundproofing materials for buildings and machinery; flexible tubes of plastic for industrial use; flexible compressed air pipe fittings, not of metal; reinforcing materials, not of metal, for pipes; pipe muffs, not of metal; junctions, not of metal, for plastic pipes