supply of spheroelastic rubber bearing (silent block) , spheroelastic rubber bearing (silent block) for aar-h type tight lock coupl er head for lhb coaches conforming to rdso specification no. rdso/2011/cg-03 rev-03 , amend ment slip no 1. of july 2024. make of silent blocks should be either tvs or gmt vide rdso letter no. m c/blb/cbc dt 31-08-2024. item should be procured from rdso approved vendor sources for aar-h typ e tight lock coupler head for lhb coaches. [ warranty period: 36 months after the date of del ivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]