Abstract: Reliable repeatable electromagnetic sealing between a door and jamb is accomplished across a broad band of frequencies without dependence upon closure pressure between the door and jamb by combining conductive resilient finger stock with electromagnetically absorbing material in alternating parallel peripheral strips along the door and jamb interface. The electromagnetically absorbing material is characterized by optimal energy absorption at frequencies higher than a predetermined frequency whereas the conductive resilient finger stock is characterized by optimal electromagnetic attenuation at frequencies lower than the same predetermined frequency. As a result, a broad band attenuating seal is provided between the door and jamb characterized throughout the frequency spectrum by high attenuation and without critical dependence upon the pressure or nature of contact of the finger stock against the conductive opposing surface of the jamb.