71525927
Jul 3, 1947
Dec 4, 1951
CARBON AND GRAPHITE PACKING RINGS AND CARBON AND GRAPHITE SEAL RINGS FOR USE IN: NON-LUBRICATED STUFFING BOXES, STEAM TURBINE AND TURBO-BLOWER GLANDS, NON-LUBRICATED AIR AND GAS COMPRESSORS, PAPER MACHINE DRYER ROLLS, AND WATER PUMPS, AND FOR USE IN REFRIGERANT GAS SEALS
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