17 Unprocessed and semi-processed rubber, gutta-percha, gum, asbestos, mica and substitutes for all these materials; semi-finished products made of plastics for use in manufacture [in extruded form]; packing, stopping and insulating materials; flexible hoses [not of metal]; flexible pipes, tubes, hoses, and fittings therefor, including valves, non-metallic; seals, sealants and fillers; insulation and barrier articles and materials; unprocessed and partially processed materials included in this class not adapted for a specific use, namely, polyester, mineral fibres, elastomers, fibres impregnated with synthetic resins, synthetic and composite materials, namely, carbon fibres, cellulose acetates, optic fibres and glass wool, cast nylon for use in manufacture, chemical fibres not for textile use, microporous synthetic sheets for the manufacture of protective clothing, protective workwear, protective rainwear and for use in manufacture, microporous synthetic strips for the manufacture of protective clothing, self-lubricating cast nylon for use in manufacture, viscose films, other than for packaging and wrapping purposes, viscose sheets [semi-finished product], yarns of ceramic fibres [other than for use in textiles]; semi- worked synthetic resins; semi-worked plastics; shock-absorbing buffers of rubber or plastics; vibration dampers; membranes and semi-processed synthetic filtering materials; adhesive tapes, strips, bands and films for industrial purposes; clutch and brake linings; tire restoration and repair materials; anti-corrosion tapes; floral foam; fixation films; marking tapes; glass ribbons and tapes; rubber pouches; protective asbestos screens; rubber bands for commercial and industrial uses; handles and supports of rubber; threads of plastic for soldering; statues and works of art, namely, decorative articles [badges] made of mica, decorative articles [badges] made of rubber, figurines made of rubber; decorative plastics films being semi-finished products; joint casting compounds; vibration damping compounds