7 MACHINE PARTS, NAMELY, SLIDING ELEMENTS FOR WEAR PROTECTION AND SEALING PURPOSES FOR USE IN INTERNAL COMBUSTION ENGINES, COMPRESSORS AND THE LIKE; METAL OR PLASTIC COMPONENTS FOR ENGINES, LATHES, ELECTROMOTORS, NAMELY, CYLINDER LINERS, PISTONS, PISTON RINGS AND BEARINGS; METAL OR PLASTIC COMPONENTS FOR ENGINES NOT FOR LAND VEHICLES, NAMELY, CYLINDER LINERS, PISTONS, PISTON RINGS AND BEARINGS; PISTONS FOR INTERNAL COMBUSTION ENGINES; PISTON RINGS; SHOCK ABSORBERS FOR MACHINES; PARTS FOR MACHINES AND ENGINES NOT FOR LAND VEHICLES, NAMELY, SPINDLES, AXLES, GEAR WHEELS, SHAFTS, AND RODS; METAL OR PLASTIC COMPONENTS OF LAND VEHICLE ENGINES, NAMELY, CYLINDER LINERS, PISTONS, PISTON RINGS AND BEARINGS; PARTS FOR LAND VEHICLE ENGINES, NAMELY, CYLINDER LINERS, PISTONS, PISTON RINGS AND BEARINGS