In article .com,
RobertL wrote:

Does Boss Green harden with time? ideally one woul dlike a
compound that you can tighten to the required position and then
leave to harden. I ihave the same problem as the OP but with an
outdoor tap screwed onto a projecting female threaded pipe. it
always points at abotu 45 degrees insead of vertical seemingly
regardless of how much I try to pack it..

Be nice on parallel BSP if there was a thin nut
as well, to lock the fitment into position.

--
Tony Williams.