An expansion joint is disclosed for connection between fluid flow conduits for permitting the expansion and contraction of the conduits while sealing same. The joint includes telescoping cylindrical members each connectable to a conduit and having a rolling seal or membrane connected therebetween to prevent leakage of fluid out of the joint. One of the members includes an inwardly turned, annular shoulder formed so as to closely surround the other member during full relative movement between the members to prevent the seal from coming in contact with foreign matter. The expansion joint is provided with a plurality of guide rods which are arranged circumferentially around the pipe joint and serve to lock the rolling seal in operative position with one member and to guide the movement of the other member during movement of members relative to each other.