Rotary gas seal

摘要

A rotary gas seal provides a gas tight connection between a pair of pipes having a common axis wherein one pipe is capable of rotation with respect to the other about their common axis. One of the pipes extends into the interior of a tubular seal member through an end wall to which it is secured by a rigid gas tight seal. The other pipe is rotatably sealed to the seal member by a gas tight gland. The seal member is secured in one part of a rotary bearing so that the bearing axis lies on the common axis of the pipes while the other pipe is secured to another part of the bearing.