Abstract: An expansion joint lies between a device and pipe and allows for movement at the joint. Embodiments utilize a case pipe, a sliding ring formed to house seals, and a flange that holds the sliding ring in place. A pipe contacts an inner seal inside the sliding ring which is compressed against the pipe beyond its memory and forms a tight seal, yet allows for pipe to move through the apparatus. At least one outer seal is compressed within its memory which allows for rotation of pipe and/or sliding ring relative to the apparatus about the axis of the pipe. Allows for unlimited travel of pipe and unlimited rotation. The apparatus becomes more efficient as contaminants fill the seals. Works below, at and beyond 1300 degree media, for example any liquid or gas. May be disassembled easily maintained.

Abstract: An applicator is provided for coating the uncovered end portions or stubs of pipe sections after they have been welded together. A belt is maintained in tension out of contact with the pipe until the pipe stubs are welded together and coating operations are to begin. The belt is then wrapped onto the pipes forming an annular cavity about the welded stubs. Chain reinforcing mesh is also applied to the exterior of the belt for support. An expanding foam which sets into a hard coating is then injected into the cavity. Once the foam hardens and fills the cavity, the belt and reinforcement are unwrapped from the coated joint and moved away from the pipe.