When I read the lab test results years a go the nickle rated best the copper next. Due to the same concerns that Sabotloader has I use teflon, since I dont like the tape I use the grease. It has work well for me. If you chose to use anti seize that contains metal I would suggest that you do so carefully if it got burn on to the side of the chamber it might be as hard as soder or braze to get off. Lee