u section ring sealing ring part of sub kit aoh 1 sub kit 3 ioh and sub kit 3 poh of n 32 tap changer as per rdso drg no skel 3463 spec no spec e 4 01 m s repl part no a 2303 drg n o swt 435461 p1 or m s aes part no m 2303 drg no 9910383748001 warranty period 30 months after t he date of delivery quantity tolerance 5 age item category normal total po value variation permitted max 8 lacs