Space Machine offers a standard product line of double ridge EMI/RFI gaskets covering waveguide sizes WRD180 thru WRD200. Additional sizes and configurations are available upon request. EMI/RFI gaskets are conductive and are die cut from a silver impregnated elastomer. Space Machine EMI/RFI gaskets are made from conductive silicone elastomer with either Silver/Aluminum or Silver/Copper fillers ( meets MIL-83528 Type B or K). These materials have very good shielding properties and conductivity, excellent sealing at temperature extremes, and have a long shelf life.