FINISHED LOW FRICTION, TOUGH, ABRASION-AND CORROSION-RESISTANT MACHINE BUSHINGS IN BEARINGS TO BE OPERATED EITHER DRY OR SUBMERGED, ESPECIALLY WHEN THE BEARINGS ARE SUBMERGED IN SALT WATER, LIQUORS OF THE PAPER PROCESSING INDUSTRY, TANNING BATHS, DYES, FOODSTUFFS, OR IN ACIDS, ALKALIES, OR SOLVENTS UP TO APPROXIMATELY FIFTY PERCENT CONCENTRATION