17 Plastic fibres, other than for textile use; threads of rubber, other than for textile use; threads of plastic materials, other than for textile use; elastic yarns, other than for textile use; pipe gaskets; rubber, raw or semi-worked; synthetic rubber; recycled rubber; waterproof packings; gutta-percha; electric, thermal and acoustic insulators; padding materials of rubber or plastics; insulating materials; soundproofing materials; insulating refractory materials; filtering materials of semi-processed foams of plastic; caulking materials; packing materials of rubber or plastics; plastic substances, semi-processed; extruded plastic in the form of bars, blocks, pellets, rods, sheets and tubes for use in manufacturing; recycled plastics in the form of bars, blocks, pellets, rods, sheets and tubes for use in manufacturing; recycled compound plastics for use in manufacture; recycled thermostatic compounds in pellet form for use in manufacture; plastic material in extruded form for use in production; injection moulding plastics; valves of india-rubber or vulcanized fibre; plastic filaments for 3d printing; insulating materials made of polyurethane foam; polyurethane sealants; plastics in extruded form for use in manufacture; extruded plastics in the form of pellets for use in manufacture; dock bumpers of rubber; synthetic rubber for use in manufacture of wide variety of goods; uncured synthetic rubber for use in manufacture of wide variety of goods; recycled rubber mixed with plastic material for use in manufacture of wide variety of goods