The packing is braided from anti-shrinkage pre-oxygen polyacrylonitrile fiber, and impregnated with PTFE emulsion
containing graphite particles. Compared with traditional carbon fiber packing, it is not brittle, and suitable for high line
speed applications.
With the high strength and good thermal conductivity of the pre-oxygen fiber, and excellent lubrication of PTFE and
graphite, the packing does not damage shafts, and is capable of long-term use.