One-piece environmental removable contact connector

A connector assembly comprising mating receptacle and plug members, each comprising

• a one-piece molded housing of insulating material with front and rear faces,
• a plurality of cavities longitudinally extending between said faces, each of said cavities including a bore in close juxtaposition with said front face and rearwardly contiguous therewith a restricted passage formed by at least one resilient riser, a plurality of rearwardly removable contacts respectively mounted in said bores, each of said contacts for connection to an insulated conductor and shaped to prevent removal by normal contact mating and unmating forces but permitting a larger force than said normal forces to cause rearward removal of said contact by radially expanding said riser, said riser normally retaining said conductor in a sealing relationship, said housing including front and rear abutment shoulders in said bore and said contact including shoulders, said housing shoulders releasably bearing against said contact shoulders, said housing of said receptacle member including a resilient sleeve integrally formed on said housing and frontwardly extending from said front face of said receptacle member, said sleeve including a forward end with an inwardly directed, elastically expandable lip extending circumferentially around said sleeve, and a polarizing shape inside said sleeve and rearwardly disposed from said lip, and said housing of said plug member including a forward end portion including said front face of said plug member and with a cylindrically-shaped outer perimeter for telescoping engagement within said sleeve, said perimeter including a circumferential sealing surface rearwardly spaced from said front face of said plug member for engagement with said sleeve when said receptacle and plug members are mated and a corresponding cutaway portion frontwardly disposed from said sealing surface to receive said polarizing shape.