Improved graphite packing.

摘要

A packing ring is provided for sealing fluids around an operating member, for example in a fluid valve. The packing ring comprises a plurality of laminated sheets of graphite material and PTFE sheet material formed into a laminated ring (56). A packing system is also provided comprising a packing box within a housing. A packing follower member is provided for supporting the operating member in the packing box. A packing assembly comprises a packing ring formed as defined above.