A high voltage relay comprises a hermitically sealed housing made of
ethylene vinyl alcohol (EVOH) and having internal components for changing
the state of said relay. Terminals are electrically connected to the
internal components for connection to external circuitry and applying an
electrical signal to control the state of the relay. A nitrogen and
sulfur hexafluoride gas fills the housing to allow for reliable high
voltage operation with the housing having low permeability to the
molecules of the gas.