supply of bfp 4a / 4b spares supply of bfp 4a / 4b spares , list of item ( s ) / work ( s ) as per tender documents , wearing ring, p / n-502.01 , wearing ring, p / n-502.02 , set of gskt and orings part no. 400 , spacer disc, p / n;551.01, ksb , spacer disc, p / n;551.02, ksb , spacer disc, p / n;551.03, ksb , spacer disc, p / n;551.04, ksb , spacer ring, p / n-504.01 , spacer ring, p / n-504.02 , stage bush, p / n-541 , throttle bush, p / n;542, ksb , neck bush, p / n;456, ksb , spacer sleeve, p / n-525.01 , bearing sleeve, p / n-529 , split ring, p / n;501, ksb , impeller ring, p / n-503.01 , cover, p / n;160, ksb , seal casing ( suc ) , p / n;441.01, ksb , seal casing ( dis ) , p / n;441.02, ksb , cooling cover, p / n;165, ksb , parallel pin, p / n;563.01, ksb , parallel pin, p / n;563.02, ksb , parallel pin, p / n;563.03, ksb , cylindrical pin, p / n;562.01, ksb , retaining ring, p / n-506.01 , retaining ring, p / n-506.02 , diffuser, p / n;171.01, ksb , diffuser, last stage, p / n;171.02, ksb , bearing housing ( n.d.e. ) , p / n;350.02, ksb , bearing cover de, p / n-360.01 , bearing cover nde, p / n-360.02