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May sound silly Jo...But try Google/looking for uses of Bees Wax.........if the Soya wax block is of similar hardness at room temperature .......could be substituted for the Bees waxDuring my years with Naval Ordnance employment, plugging the female hex of socket headed cap screws with 'Gun Slushing' which was a 'needeble' mix of Bees Wax + a little petroleum oil.......this was the preferred final task prior painting on yes.......gun mount and Missile Launcher hydraulic systemsDerek