72277353
Aug 2, 1967
Jun 18, 1968
PACKING AND SEALING APPARATUS MADE OF SPECIALLY PROCESSED FLUOROCARBON RESINS-NAMELY, PIPING GASKETS, VALVE GASKETS, VALVE STEM PACKING, PUMP SHAFT PACKING, SEALING RINGS AND WIPER RINGS FOR HYDRAULIC CYLINDERS, OIL SEALS FOR PUMP HOUSINGS, AND PISTON RINGS FOR INTERNAL COMBUSTION ENGINES
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