On Mon, 13 Mar 2006 10:35:42 +0000, Christian McArdle wrote:

PTFE is used on BSP fittings usually with a jointing compound. Examples
are radiator tails and outside taps, where the thread IS part of the
water seal.

You mean without, Shirley?

PTFE tape OR jointing compound (e.g. Boss White) poss. with hemp.