Procurement of Set of maintenance Rubber kit for SDW- 1 type R- 6 Relay valve as per BSL/ ELW/ SK No.- 9088. A set consisting of 07 items 10 Nos. ( This is shelf life items and should be procured with staggered delivery period. Supplier to mention/ print date of manufacturing on the item & item to be supplied within 90 days of manufacture date. ) as per Annexure attached.