Abstract: An electrical device has an electrical component, a housing having an open end for receiving the electrical component, a closure member for sealing the open end of the housing, the housing including an inner wall and a shoulder on the inner wall providing a seat for the closure member, and a retainer for retaining the closure member in sealing engagement with the seat. The retainer includes a plurality of radially outwardly extending ears for gripping the inner wall of the housing. A plurality of radially inwardly projecting lugs are provided on the inner wall and each lug has an axially inwardly facing surface for engaging the ears to maintain the closure member in sealing engagement with the seat.

Abstract: An electrical device comprising an electrical body in a container with terminals extending through an open end of the container. The electrical body has receptacles at opposite ends thereof. A positioning means is located at an end of the container opposite the open end thereof and projects into a receptacle of the electrical body. An assembly, closing the open end of the container, includes a first layer adjacent the electrical body with a positioning means projecting into a receptacle of the electrical body.A disc-like member has a positioning means extending therefrom. A recess (or recesses as the case may be) is formed in the disc-like member and provides a membrane adapted to be punctured by a substantially rigid member such as the terminal of the electrical body. Optionally, a vent may be formed in the disc-like member to provide a rupturable elevated pressure release means.