Tender For corrigendum : procurement of verycritical rubber items for 500 mw generators of korba - o-ring 297x4,bhel, gasket 61.5 x 15,bhel, ring 15.54 x 2.62,bhel, o-ring 265 x 8,bhel, rod packing,bhel, o-ring 55x4,bhel, o-ring 32 x 3,bhel, o-ring 50x4,bhel, viton d-profile,bhel, profile perbunan-005,bhel, round profile-10mm,/bhel, profile perbunan-006,bhel