Sealed switches for aerospace applications encompass waterproof and hermetically sealed electromechanical switching devices designed to operate reliably in environments subject to moisture ingress, fluid contamination, pressure differentials, and outgassing, employing glass-to-metal or ceramic-to-metal hermetic seals and conforming to qualification standards such as MIL-DTL-8805 to maintain contact integrity across wide temperature and vibration envelopes.
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