Try Duralac.* We have*used it for*10 plus years with good*results.** Here's some cut and*past info and the link from the manufacter.* Hamilton Marine in Boston now sells the stuff.
Used in the Aerospace industry as an essential corrosion inhibiting material wherever dissimilar material are used.* Duralac is an anti-corrosive jointing compound for use between joints of dissimilar metals.
Properties Barium chromate is only very slightly soluble in water and hence is not leached out of the joint even in the presence of a considerable flow of water. It is tough and flexible, absorbs little water and is resilient to seawater.
Uses Duralac is indispensable for the sealing of joints between dissimilar metals of all types including magnesium and its alloys.
-- Edited by Larry M on Thursday 13th of October 2011 05:42:42 PM