Abstract: An end connector for coaxial cable, attached thereto by a compression crimp urging engagement between a threaded inner wall of an outer sleeve of the connector and utilizing a deformable O-ring captively positioned between a backside of a ground conductor plate and an inner edge of an inwardly flanged shoulder portion of a connector nut. Upon connection of the connector of the present invention to its mating connector, pressure applied to the ground plate platform deforms the O-ring, thereby urging improved electrical contact between ground plate platforms of respective connectors while preventing introduction of unwanted contaminants into the conductor.