Proper MF-65 PTO Oil Seal Orientation

Which way does the PTO oil seal install on a MF-65. The seal has a flat side and a side with the part markings and a raised lip. Which side goes to the oil and which aft?

The lip of the oil seal should face into the rear axle housing, This should be a double lip seal as I recall, the inner seal keeps the oil in and the outer seal keeps the dirt out.