Abstract: An improved system for effecting working access into sealed enclosures, such as glove boxes. The sytem includes an elongated arm-length sleeve, one end of which is sealed in a port fitting in the wall of the chamber and the other end of which is fitted with a replaceable glove. The elongated sleeve is preferably tapered from shoulder to wrist and of corrugated or convoluted structure for easy extension and retraction. The porthole fitting is preferably elliptical to maximize working access to the chamber. The inner end of the sleeve is fitted with a wrist bushing in which a glove supported on a deformable ring may be fit in sealed relation. The glove may be replaced with a further glove supported on a separate deformable ring without disruption of the sealed relationship.

Abstract: A device for sealing detachable components, such as gloves, windows or closure plugs, in the ports of rigid walled chambers, such as glove boxes. The sealing device permits displacement and replacement of a detachable component in place in such a port without breaking the seal to expose the interior of the chamber to the outside atmosphere, or vice versa. The sealing device is characterized by a hand hole bushing disposed in the port and secured to the chamber wall to define a passageway having a continuous sealing surface and a continuous adjacent groove for retaining a detachable component within the bushing. The detachable component is characterized by a deformable semi-rigid bead adapted to be snapped into the continuous groove of the bushing and a continuous channel holding an O-ring sealing element which engages the sealing surface of the bushing.