supply of sealing materials (sealing cord) for met [sealing materials (sealing cord) for metallic threaded joints in contact with 1st,2nd and 3rd family gases and hot water non- hardening jointing compounds conforming to bs specification en751-2- 1997 class arp compound with dvgw/csa/nsf/ansi-61/ as-nzs-4020 approval,] , sealing materials (sealing cord) for metallic threaded joints in contact with 1st,2nd and 3 rd family gases and hot water non- hardening jointing compounds conforming to bs specification en75 1-2- 1997 class arp compound with dvgw/csa/nsf/ansi-61/ as-nzs-4020 approval, [ warranty peri od: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]