(under subclass 96) Devices in which the sealing member (gasket) is capable of containing (or retaining) an inflating fluid, e.g., inner tube type.
SEE OR SEARCH CLASS
277, Seal for a Joint or Juncture, for a seal between two pipes or a pipe and a wall that are at most secured together only by friction between the seal and the pipe or wall,
605, for a static contact seal or an associated member that is hollow, fluid-filled, or inflatable and intended for use on a pipe, conduit or cable.