Abstract: Hermetic housing comprising: a first element (11) in sheet form, made from at least one material chosen from a metal, a ceramic and a glass; a second element (15, 17, 18) for covering said first element, likewise made of at least one material chosen from a metal, a ceramic and a glass; a first metal surround (12) interposed between said first element and said second element, comprising an internal part (14) partially or fully positioned within the perimeter of said first element and an outer part (13) positioned fully on the outside of said perimeter of said first element; a first hermetic seal between said first element and said internal part of said first metal surround; and a second hermetic seal between said second element and said outer part of said first metal surround. Method of encapsulating a device, notably an implantable medical device, using such a hermetic housing.