Ebonite; Fittings, not of metal, for rigid pipes; Flexible hoses, not of metal; Insulating and protective interlayer dielectric materials and coatings for use in integrated circuits, semiconductor devices, computer disk drives and other computer hardware; Padding materials of rubber or plastics; Pipe gaskets; Plastic substances, semi-processed; Reinforcing materials not of metal for pipes; Synthetic rubber; Washers of rubber or vulcanized fibre