hoerbiger india make net gas compressor spares hoerbiger india make net gas compressor spares as per tender documents , list of item ( s ) / work ( s ) as per tender documents , piston ring p/n 2356 . 6401 . 730 , rider ring p/n 2355 . 6401 . 730 , piston ring 1st stage p/n:2356 . 0003 . 000 , rider ring p/n 2355 . 4001 . 730 , oil scraperp/n 2270 . 0035 . 180 , seal rings p/n 270 . 0025 . 200 , packing ring stage i part 2269 . 2014 . 010 , packing ring stage ii part 2269 . 2014 . 010 , suction vlv with unloader , 2450 . 1851 . 040 , suction val w . unloader pn: 2450 . 1321 . 410 , repair kit for check valve p/n 1937463 , repair kit for check valve p/n 1937464 , check valve with housing 124f3d , check valve with housing 197g3d