17 FLEXIBLE DISCS AND CONNECTING PLATES OF RUBBERIZED MATERIALS FOR THE ELASTIC INTERCONNECTION OF TURNING AND SLIDING SHAFTS; ELASTIC JOINTS FOR MACHINES - NAMELY, RUBBER SHOCK ABSORBERS, SUSPENSION RODS AND CONNECTING RODS; FLEXIBLE RUBBER MOUNTS FOR MACHINES; RUBBER BUMP STOPS FOR MACHINES; RUBBER BUSHINGS, SEALING RINGS AND BEARING SEALS; ENGINE MOUNTS; FLEXIBLE ELASTIC COUPLINGS AND JOINTS FOR MACHINE TRANSMISSIONS