Open drive rear seal direction?

I don't know what fuzz you are talking about, but a rubber seal always has the lip towards the oil you are trying to contain.
 
cas3 is right, the rule I always follow is: the springloaded lip of the seal is always pointed at the pressure or fluid
 
I was told by a bearing co that lip goes towards oil that's pressurized and away from non-pressure, if trying to keep dirt out.
 
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