supply of set of tpu rings , set of tpu rings consisting of 02 items: (1) tpu ring inner 6 mm thick for primary suspension of fiat bogie of lhb coaches to rdso drg. no. cg-20049, item-1, alt-01, qty/set: 12 nos. (2) tpu ring outer 6 mm thick for primary suspension of fiat bogie of lhb coaches to rdso drg. no. cg-20049, item-2, alt-01, qty/set: 12 nos. conforming to rdso spec. no. mp-0.40.99.01 rev-03. note:to be procured from blw approved ve ndors of thermoplastic polyurethane spring pads (happy pads) for locomotives [ warranty period: 30 months after th e date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]