Silver Plated Copper filled Fluorosilicones are of the highest performers for Shielding Effectiveness. This fluoroelastomers is highly conductive, and meet levels of shielding that are not able to be achieved by most conductive fluoroelastomers. Specifically recommend for applications that have controlled environments, but may be exposed to fuel or solvents, due to some incompatibility with dissimilar metals with regard to galvanic corrosion. Our 1167 is our 75 Durometer version of this particle filled elastomer group.