It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
Google will get you datasheets for those quite easily. Doing so will give you a ds for 567, which in part reads: "... The high lubricating properties of this
compound prevent galling on stainless steel, aluminum and all other metal pipe threads and fittings...