Tenders for Supply of Thermoplastic Polyester Elastomerhytrel Lower Washer For Primary Suspension Of Main Line Bg Coaches To Rdso Drg.No. Cg-K4059, Alt.4 And Conforming To Rdso Spec. No. C-K409 Rev-3.. Thermoplastic Polyester Elastomerhytrel Lower Washer For Primary Sus Pension Of Main Line Bg Coaches To Rdso Drg.No. Cg-K4059, Alt.4 And Conforming To Rdso Sp Ec. No. C-K409 Rev-3. Warranty Period: 30 Months After The Date Of Delivery