Acoustic insulating materials and plastic being for use in manufacture in the form of sheets, blocks and rods; plastics fibres (not for use on textiles); padding and stuffing materials of rubber or plastic; partly processed brake lining materials; clutch linings; cylinder jointings; semi-processed foams or films of plastic; flexible tubes not of metal; gaskets; junctions not of metal for pipes; reinforcing material not of metal; semi-processed artificial resins; rubber material for recapping tyres; sealant compounds for joints; elastic yarns (not for use in textiles); insulating material for sound insulation