procurement of various rubber consumables for 60 mw machines of chibro power station-1 01 acryle nitrile base reinforced rubber seal. ( make indian rubber / bosco / hyderabad_rubber ) synthetic rubber isolating gland seal 00: 853.0 mm, id: 755.0 1 .02 mm for shaft gland. ( make : indian rubber / boscofhyderabad rubber ) 1 03 rubber ball dia 200 mm for air realease valve 6” of mw. ( make indian rubber fbosco / hyderabad rubber ) rubber flapper seat for air release valve 6n 1.04 od 300 mm, ball seat dia: 150 mm, id 100 mm ( make indian rubber / bosco / hyderabad rubber ) chevron rubber packing set consisting of 6 no. intermnediate 1 .05 and 1 no. outer ring for lever side of miv. ( make indian rubber / bosco / hyderabad rubber ) chevron rubber packing set consisting of 6 no. intermediate 1 .06 and 1 no. outer ring for non lever side of miv. ( make indian rubber / bosco / hyderabad rubber ) packing for miv servo motor piston rod, cd: 247.65 mm, id: 1.07 215.9 mm, thickness of complete set 50.8imm ( make indian rubber / bosco / jyderabadrubber nitrile nylon threaded rubber cup seal, size-150 xc 120 x 15 1 .08 mm of 4 ball revovling flange of mw. ( make : indian rubber / boscoil-iyderabad_rubber )