Don't quote me on this one Skip but I think the axle flange gasket is metal on most of the full floaters I have seen. They are cheap and I personally wouldn't re-use a metal gasket, just finished rebuilding my hubs so I just went thru the same exercise. Make sure that both surfaces are good and clean and flat, i.e., no burrs. I stoned mine before re-assembling. These are hard enough to keep from leaking even when you use a new gasket.
Denny Graham
Sandwich, IL