supply of polyurethane spring pads for secondary springs of 3 phase locomotives.polyurethane spring pads for secondary springs of 3 phase locomotives.,polyurethane spring pads for secondary springs of 3 phase locomotives to id 199mm; od 310 mm and thickness of 6mm. material and testing: thermoplastic polyurethane spring pads (happy pads) for locomotives as per rdso spec no mp.0.40.99.01(rev 03) of aug 2017. note: hardness of the spring pads t o be maintained between 90-95 shore a as per is 868. [ warranty period: 24 months after the date of d elivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ] => limited