supply of o ring for axle box of wap7/wag9 loco size 250x3 nbr 1872 as per abb drg no. ib o12-00750 rev 0 or latest for all locos. note: shelf life minimum 12 months from the date of supplyo ring for axle box of wap7/wag9 loco size 250x3 nbr 1872 as per abb drg no. ib o12-00750 rev 0 or latest for all locos. note: shelf life minimum 12 months from the date of supply,o ring for axle box of wap7/wag9 loco size 250x3 nbr 1872 as per abb drg no. ib o12-00 750 rev 0or latest for all locos note: shelf life minimum 12 months from the date of supply [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]