[Class : 7] Piston Rings, Seals For Piston Rods, Scraper Rings And Oil Scraper Rings For Reciprocating Compressors, Spare Parts And Replacement Parts For The Aforesaid Goods; Valves, In Particular Plate Valves, "Poppet" Valves And Annular Valves For Compressors, Removable And Spare Parts For The Aforesaid Goods; Joints [Parts Of Engines]; Bearings [Parts Of Machines].[Class : 17] Sealing Rings And Seals, In Particular For Reciprocating Piston Compressors.[Class : 37] Repair, Particularly Servicing, Maintenance And Repair Of Hydraulic And Pneumatic Installations And Instruments, Compressors And Compressor Valves, Piston Rings, Seals For Piston Rods And Scraper Rings For Reciprocating Compressors, As Well As Components Of The Aforesaid Goods; Advice, Excluding Advice Provided To Companies, In Relation To Repair, Servicing And Maintenance Of Machines, Particularly Of Compressors, Reciprocating Compressors And Their Parts.