Abstract: There is disclosed a device having utility to easily couple in abutting relationship an end of each of two conduits, for instance. The device includes a sleeve means adapted and constructed to encompass the outer end portions of each of two tubular conduits. The sleeve has positioned therein essentially co-extensive thereof a tubular shaped member constructed of an elastomeric material. The elastomeric member is secured to the sleeve only at the ends thereof thereby defining an annular material receiving area between the inner surface of said sleeve and the outer surface of the elastomeric member. The sleeve has valve means for effecting communication to said material receiving area. Material under pressure may be introduced through the valve means to thereby expand the material receiving area while at the same time causing the elastomeric member to thrust inwardly in the direction of the encompassed ends of the respective conduits.