Composite particles designed as a filler for gaskets, caulking compounds and plastics in general. The unique properties are obtained by using a soft metal core galvanically similar to the metal the sealant will be in contact with. The oxide surface of the core metal is typically breached by a multitude...http://www.google.com.au/patents/US5286416?utm_source=gb-gplus-sharePatent US5286416 - Galvanically compatible conductive filler useful for electromagnetic shielding and corrosion protection
