Patent ID: 7784798

Claim:
A device for joining a first tubular having a socket end with a second tubular having a spigot end, the socket end having a retainer groove formed by a front wall, a radially outward surface, a retainer wall, and a circumferential compression rib that projects radially inward from a sealing wall, the device comprising: (a) a resilient annular member having a sealing portion for forming a seal between the first tubular and the second tubular: (b) at least one gripping element positioned in the resilient member, the gripping element having: (i) a plurality of teeth projecting radially inward toward the spigot end for gripping an outer surface of the spigot end; and (ii) a blunt tooth extending axially forward toward the socket end for contacting the front wall, the blunt tooth rolling along the front wall during relative movement between the first and second tubular.