Abstract: Disclosed embodiments are related to attachment and sealing methods for an enclosure containing radio frequency (RF) components that may block propagation of RF signals and may also connect portions of the enclosure. In some embodiments, a gasket is used in an RF filter assembly containing multiple cavities which, in operation, are excited by RF energy. Such a gasket may be used to hold a conductive cover to a chassis containing the cavities. As a result, in some embodiments, radio frequency propagation between certain filter cavities or outside the filter may be prevented while reducing, or eliminating, the need for other mechanical fixing methods, such as by screws, solder and/or welds. Advantageously, the number of mounting screws used for mechanical structure may be reduced, and, in some embodiments, eliminated.