35 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