Abstract: An electrical interconnection system with an adapter mounted in an opening within a connector interface of a panel of an electronic enclosure is described. A sealing member may be used to prevent passage of foreign matter, such as liquid, gas or dust particles into the enclosure and into the mating region between the adapter and a mating plug connector. The sealing member may comprise a base and a sidewall configured to wrap around an outer border of the adapter. The sealing member may be configured to form a first sealing interface with the panel, and a second sealing interface with the plug connector. The first and second sealing interfaces may be orthogonal to each other. The sealing member may be made of an elastic material.