Raw or semi-worked rubber; raw or semi-worked gutta-percha; asbestos packing for valves; mica, raw or partly processed; semi-processed plastics in extruded form for use in production; packing, stopping and insulating materials for protecting parts of machines; flexible pipes, not of metal for use in machines and automobiles; padding materials of rubber or plastics for protecting parts of machines; clutch linings; dielectrics for use in insulating and coating wires; cotton wool for packing; ri...