This seal fits early model Shaver 8 inch post drivers. It is the cup seal for the main hydraulic cylinder. The last two photos are of a seal from an early model driver that we recently repaired. This seal will not fit later model post driver cylinder cups. Later model seals are black in color.
A-Shaft Diameter 1 ”
B-Outer Diameter 1.25”
Give us a call if you have any questions. 502-839-3585