WL Gore”s GORE GFO packing fiber from the Sealant Technology Group is a high-performance composite material designed and engineered specifically for use as a compression packing for sealing shafts on high-speed pumps, mixers, agitators, and any other equipment with rotating or reciprocating shafts. The packing fiber doesn’t get hard or brittle, thus minimizing shaft wear. Its lubricity and high thermal conductivity keep it cool-running, even after extended periods of continuous use. Gore has certified a select group of packing braiders, allowing users to be sure they are getting genuine 100% GFO packing fiber by looking for the name printed right on the packing.