In conditions where there are temperature fluctuations and moisture, the metallic Ex e breathers from the 781 series protect electrical wiring from the effects of condensation inside the enclosure. They provide continuous pressure equalisation between the inside of the enclosure and the atmosphere around the enclosure.
There are two metric and two NPT thread versions available for this purpose. An integrated connection thread seal and a special fixture nut are included in the standard version. They have worldwide certification according to IECEx, ATEX and cCSAus.