Most brass pipe fittings don't need sealer at all, especially if they're going into a cast iron or steel female thread. A small dab of brush-on Permatex sealer works better than any tape or pipe dope I've ever found if a thread seal is necessary.
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!