supply of set of nitrile rubber o ring consisting of two itemsset of nitrile rubber o ring consisting of two items,set of nitrile rubber o ring consisting of two items as follows: (i) dia 280 mm x 4 mm c d, qty. -01 no. and (ii) dia 205 mm x 3 mm cd, qty. - 01 no.as per els/tata drg. no. tata/rs/misc/1 3/1, alt-1. material - nitrile rubber, test certificate to be given from nth or any other govt.approved test agency along with material. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ] => limited