tender for supply of various sizes of ‘o rings for fd & pa fans and mechanical seals for air preheater lube oil pumps of unit i,ii & iii , ‘o ring 150 x 3 , ‘o ring 139.2 x 5.7 , ‘o ring 140 x 5 , inner race dia 150 x 165 x 40 , oil remover avas 110 x 100 x 7 x 10 , felt gasket , mechanical seals for tushaco make three screw pump for unit i & ii airpreheater guide and support bearing. , oil seal for unit i & ii id, fd & pa fan motor lube oil system material: neoprene rubber oil seal size 16 x 28 x 10 mm , mechanical seals for delta make pd triple screw pump for unit iii airpreheater support bearing. , mechanical seals for alekton make triple screw pump for unit ii & iii airpreheater guide bearings model: cf-150-500-2, sl. no. 02012887 , simmer ring ba 42/65 x 10