Systems and methods for providing input component assemblies for dome switches are provided. In some embodiments, an input component assembly includes a switch, a button positioned over the switch, where the button is operative to close at least one circuit of the switch when the button is depressed towards the switch, an actuator positioned underneath the button to at least partially enclose at least one switch element, where the actuator is operative to deform when the button is depressed, and a weld plate welded to an underside surface of the button with at least one sonic weld joint to create a seal around the actuator and the at least one switch element, where a portion of the actuator is secured between the underside surface of the button and the weld plate.