supply of set of gaskets consisting of 02 items as :- 1. gasket top header to tank as per drg. no.9523130 altset of gaskets consisting of 02 items as :- 1. gasket top header to tank as per drg. no.9523130 alt,set of gaskets consisting of 02 items as :- 1. gasket top header to tank as per drg. no.952 3130 alt a or latest to emd part no.9523130 & dlw part no.17270935; qty.set- 01 no. 2. gasket top h eader to tank at pipe nipple as per drg. no.8250627 alt-aa or latest to emd part no.8250627 & dlw par t no.17270900: note: emd part no date of mfg and firm name to be printed on the gasket / pack ing [ warranty period: 30 months after the date of delivery ] ]