http://www.militec1.com/ (http://www.militec1.com/)
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Works well whenheat cured into the metal.
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Either that orDRI WASH 'n GUARD® (http://"http://www.driwashsolutions.com/catalog/index.php?cPath=21&osCsid=97f61dfbcd3392816c34e877dbb34d32)metal polish and Ultra ion to seal the surface.
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Wax might work, although it probably would require retreatment fairly often . . .