supply of a set of silicon rubber gasket o rings , a set of silicon rubber gasket o rings suitable for transformer oil cooling pipes (met allic pipes) flange type - a,b,c,d,f,g,k,l & m to abb id no. 3ehn 424150 for wag-9 loco, as per els/ ajni%u2019s sketch no. els/aq/wag-9/sk.no. 0033, rev-02 or latest and confirming to clw spec. n o. clw/es/3/0142, alt-f or latest. (this is shelf life item and should be procured with staggered deliver y period. supplier to mention/print date of manufacturing on the item & item to be supplied within 90 days of manufacture date.) [ warranty period: 30 months after the date of delivery ] ]