Fabric-Over-Foam (FoF) 51G EMI Gaskets Laird Performance Materials Fabric-Over-Foam (FoF) 51G EMI Gaskets provide excellent EMI shielding performance where EMI issues occur. These gaskets are composed of electrically conductive fabric wrapped around a soft urethane foam core. The FoF 51G EMI gaskets feature <,0.07Ω/square low surface resistivity providing excellent conductivity, extremely low compression forces, and highly conductive fabric. These gaskets also feature >,100dB shielding effectiveness across a wide spectrum of frequencies and are RoHS compliant.