supply of kit for constant contact polyurethane side bearer pad assembly. , kit for constant contact polyurethane side bearer pad assembly (3 rings) for 22 hs bogie as per their own drawing approved by rdso ,confirming to rdso spec. no. wd-38- misc-2004, rev-3. and r dso envelope drg. no. wx-04057 alt-1 , consisting of following 3 items- (1) round plate bonded with stop per spring - qty. 02 nos (2) pu lining (top&bottom) - qty. 01 nos (3) poly rings - qty. 03 nos. [ warrant y period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]