Tenders for Supply of Set Of O Rings For High Voltage Bushing, Set Consists Of Two Items As Given Below: 1. Size Id 135 Mm, Thickness 3Mm- 01 No./Set. 2. Size Id 120Mm, Thickness 5Mm- 01 No./Set. Material: Viton Rubber, Hardn Ess - 65 To 75 Warranty Period: 30 Months After The Date Of Delivery