In addition to the single molded part incorporating features of the conventional nut, sealing member and body, the connector includes a post and a hollow compression sealing ring. The post includes an integrally formed stem and flange portions, with the compression ring axially movable upon the body and including a tapered surface which applies a radially inward force to the body, compressing the cable and providing tight frictional engagement of the connector and cable. When in its fully installed position, the axial length of the ring is sufficient to entirely enclose the unitary body and nut, preferably having an interference fit with the outer surface of the nut portion, thus locking and sealing the connector threads to the equipment port. The compression ring is preferably of metal to shield the internal plastic parts of the connector from UV rays.