can put a little silicon gasket maker on it gotta make sure its clean. I don't recommend it though. If the boots are all dry and stuff i would just replace them while you can. If there's a lotta grease everywhere I would just buy a rebuilt axle.
http://www.hadesomega.info -car specz and movies 95 Eclipse RS | 76' 280Z | 89' MR2 | 99 Neon | 91 Zephyr Who sez FF can't drift?