Abstract: A means of sealing a multipath, multipass swivel whereby that part of the structure housing the seal element deflects under pressure to compensate for the overall structural deflections, such that a constant seal gap is maintained. A means of lubricating and flushing seal surfaces is also disclosed whereby a controlled liquid is injected between two seals at a higher pressure than the production fluid such that the seal between the injected liquid and the production fluid is less capable than the seal between the controlled liquid and ambient.