The Dresser POSI-HOLD pipe joining system is a unique concept for providing seal and restraining pipe connections for any combination of Steel and P.E. pipe. This boltless coupling features an advanced pipe joining design with fully independent seal and restraining capabilities that eliminate the need for expensive welding or heat fusion equipment. The boltless design cancels the mechanical assembly of external fasteners that provide the backbone in both sealing and restraint of bolted products. Using a portable hydraulic pump, joint assembly is made from above the ditch in the matter of only a few short minutes, thus substantial savings in labor, construction, excavation and joint assembly time are realized.