Packing material for forming seals; stuffing rings, namely, rings of rubber for use as pipe connection seals; joint packings for plastic pipes; padding materials of rubber or plastics; packing stuffing materials of rubber or plastic; flexible tubes not of metal; sealant compounds for joints; plastic mounting strips for plumbing use; plastic tubes for protecting electrical wires and milking electrical machines; plastic insulating compositions to prevent the radiation of heat, namely, asbestos ...