Rubber, gutta-percha, asbestos and mica; raw or partly processed gum; goods made from rubber, gutta-percha, gum, asbestos, mica, namely foam rubber, rubber seals for jars, asbestos felt, electrical insulating mica products, nonmetal sealing rings for use as connection seals; plastics in extruded form for use in manufacture; packing and insulating materials; stopping materials, namely rubber bottle stoppers, rubber stoppers for industrial packaging containers; flexible pipes, not of metal