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Brass and aluminium gasket compatibility [South Africa] 

November 20, 2007 I want to use a gasket Sealer to seal an aluminium gasket between an aluminium head and cast iron block. the Gasket Sealer contains brass as its active component. Will this be fine or is there a chance of Galvanic corrosion? Once the gasket is in place likelihood of exposure to moisture is extremely low. Clinton Palmer Manufacturer - Johannesburg, South Africa June 20, 2008 Hi, Clinton. I'm not experienced in gasket seealant technology, but unless the mmanufacturers instructions say it is okay for aluminum I would be concerned about that. Copper/brass seems to have a great capacity to cause aluminum to galvanically pit in many applications and I can't see offhand where this is different. Good luck. Regards, Ted Mooney, P.E.  finishing.com Brick, New Jersey