What spindle & rotor are you using? Never mnd, 1.73 is the typical 70-71 spindle & 2.622 is a 73 & up rotor....
I think your best bet is a National 472185 The OD & width are good, the ID is .020 O/S but since the typical seal lip deflection is .060.. & your sealing grease not a fluid it should be fine...