procurement of spare parts of silo rotary air blower ( model no rh-120 wctr ) installed at ahp-ii , 2x660 mw units , mppgcl , dongalia , lead through shaft seal , oil seal , sealing bracket , oil flinger ( al ) , disc spring assembly , disc spring , oil thrower , shaft sleeve de for long shaft , piston ring , drive shaft with rotor , shaft sleeve , condensate sealing ring , internal circlip , o ring , timing gear , bearing stopper , bearing housing , non-drive rotor with shaft , bearing lock plate de nds , oil level indicator assembly , flexible couplings , pressure relief valve , non return valve , suction filter