I run the durahubs with oil inside.
100% dry install on fresh hubs and solvent washed at install. I used loctite green high strength retaining compound.
But yes it's no match for a 4" stone at 75kph. I have some wicked dints in the durahubs from the return trip.
I like to think of them as war wounds of epic battles. And good times dribbling shit with the mates.
Damo's dodgy boat building repair centre.