Seal O Ring 0943-57 Main Reservoir Inspection Window Wap7, Wag 9 Locomotives. Specificatio N As Per Drawing No. 1209-7-132-010 (Sr. No. 17). Material- Viton. Test Certificate And Warranty Certificate T O Be Send With Supply. To Be Procured By Past Proven Supply In Ir. [ Warranty Period: 30 Months After Th E Date Of Delivery ] ]