Procurement Of Packing Ring For Wheel Tread Wear, Size- Od 254 Mm, Id 120 Mm And Thick 13 & 22 Mm Each Set Consisting Of 13 Mm 16 Nos & 22 Mm 04 Nos To Rdso/sk-97072, Alt-nil And Rdso Specn. No.- C 9703/oct.1997.