7 Machine parts particularly for the metal, wood, plastic, paper, leather and artificial leather processing industries, namely, oil filters, air filters for mechanical purposes, fuel filters, bushings and bearings, mechanical seals, mechanical seals in the nature of transmission seals, engine seals, hoods, cam covers, internal combustion engine parts in the nature of engine covers not for land vehicles, brake linings for machines, roller bearings, conveyor rollers in the nature of roller conveyors, rollers for rotary printing machines; Machine parts particularly for the chemical and pharmaceutical industries, food producing and processing industries, namely, oil filters, air filters for mechanical purposes, fuel filters, bushings and bearings, mechanical seals, mechanical seals in the nature of transmission seals, engine seals, hoods, cam covers, internal combustion engine parts in the nature of engine covers, brake linings for machines, roller bearings, conveyor rollers in the nature of roller conveyors, rollers for rotary printing machines; Machine parts particularly for the textile, glass and ceramic, building, paper and printing industries, namely, oil filters, air filters for mechanical purposes, fuel filters, bushings and bearings, mechanical seals, mechanical seals in the nature of transmission seals, engine seals, hoods, cam covers, internal combustion engine parts in the nature of engine covers, brake linings for machines, roller bearings, conveyor rollers in the nature of roller conveyors, rollers for rotary printing machines; Machine parts particularly for agriculture and forestry, mining and extraction of petroleum and natural gas, namely, oil filters, air filters for mechanical purposes, fuel filters, bushings and bearings, mechanical seals, mechanical seals in the nature of transmission seals, engine seals, hoods, cam covers, internal combustion engine parts in the nature of engine covers, brake linings for machines, roller bearings, conveyor rollers in the nature of roller conveyors, rollers for rotary printing machines; Machine parts particularly for the industries which produce vehicles, apparatus and machines for transport on land, in the air, on rail and on water, namely, oil filters, air filters for mechanical purposes, fuel filters, bushings and bearings, mechanical seals, mechanical seals in the nature of transmission seals, engine seals, hoods, cam covers, internal combustion engine parts in the nature of engine covers, brake linings for machines, roller bearings, conveyor rollers in the nature of roller conveyors, rollers for rotary printing machines; Machine parts particularly for the purification and keeping pure of liquids and gases, namely, oil filters, air filters for mechanical purposes, fuel filters, bushings and bearings, mechanical seals, mechanical seals in the nature of transmission seals, engine seals, hoods, cam covers, internal combustion engine parts in the nature of engine covers, brake linings for machines, roller bearings, conveyor rollers in the nature of roller conveyors, rollers for rotary printing machines; Parts for machines for conveyance of bulk materials, for cranes, for lifting machines and hoists, for robots, for engines and clutches of machines except engines and clutches for land vehicles, namely, gears for machines, transmissions for machines in the nature of step-up and step-down transmissions, mechanical controls, lubricating pumps; packaging machines, automatic industrial labeling machines for applying labels to packaging; electric, hydraulic and lubricating pumps; machine parts, namely, slides in the nature of powered ramps and valves being parts of machines; industrial machine presses; mechanical slide-ring seals, namely, metal seal rings for use with turbomachinery and centrifuges; parts for domestic appliances and kitchen machines, namely, parts for electric pasta maker machines, namely, machines parts in the nature of friction linings and linings for clutches and brakes all sold as an integral component part of kitchen machines, brake disks, bearings, cylinders, roller bearings, bursting discs for a defined pressure release, sealing rings in the nature of metal seal rings for use with turbomachinery and centrifuges, isolating slides in the nature of powered ramps for pumps and heat exchangers; all the above mentioned goods consisting of carbon or of plastic reinforced with carbon fibers or of a material from the above mentioned group, coated with a ceramic or metallic material, or of carbon bound with plastic, of sintered metal, of silicon carbide, of pyrocarbon, of pyroboronitride or of carbon impregnated with synthetic or natural resin or with metallic materials, including in each case graphitic forms of carbon; parts of machines, namely, fluid tanks lined with rubber or plastic; part of machines, namely, metal internal combustion engine gaskets, electrical motor brushes being parts of motors and electrical contact pieces of motors including sliding contacts in the nature of contact points for the transmission of electrical currents, consisting of carbon, of carbon reinforced with carbon fibers, of plastic reinforced with carbon fibers, of plastic reinforced with glass fibers, of carbon bound with plastic or of carbon impregnated with synthetic or nature; Parts for vending machines, namely, machine parts in the nature of bearings, seals, hoods, covers and linings; parts and components for use in the production and processing of materials and parts consisting of high-purity substances for use in semiconductor technology, computer technology, and solar technology, namely, electrodes, electrically conductive contact pieces in the nature of contact points, and semiconductor wafer carriers in the nature of chip housings, all consisting of carbon or of carbon reinforced with carbon fibers or of one of the above mentioned materials, but with coating of pyrocarbon, pyroboronitride or silicon carbide, or of pyrocarbon, pyroboronitride, silicon carbide or of plastic reinforced with carbon fibers or of carbon bound with plastic or of carbon impregnated with synthetic or natural resin, including in each case graphitic forms of carbon; component parts for spark-erosion appliances and welding appliances, namely, electrodes, linings and contacts pieces