supply of set of nitrile rubber o ringsset of nitrile rubber o rings,set of nitrile rubber o rings as per els/tata drawing no. tata/rs/misc/13/1, alt-1. s et consisting of 02 items in 02 nos as follows: (1) diameter 280 mm x 4 mm cd, qty.= 01 no. per se t & (2) diameter 205 mm x 3 mm cd, qty= 01 no. per set. material: nitrile rubber, test certificate to be given from nth or any other govt. approved test agency along with material. one sample to get approved before bulk supply of material. [ warranty period: 30 months after the date of deliv ery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ] => limited