The best axle "gaskets" are soft metal, either copper or aluminum, and need to be coated with a non-hardening gasket sealer. If there is any movement at all between the axle and the hub, even a few thousandths, a paper gasket will be damaged and start leaking. Bigger full-floater rear hubs have tapered metal cones that grip the bolts tightly and fit into corresponding tapered holes in the axle flange to prevent any movement. 3/4 and 1 ton rear axles usually don't have them, but the OEM bolts have an unthreaded shank under the head that's a very close fit to the holes in the flange.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!