Flexible graphite packing braided from expanded graphite yarns, reinforced of cotton fiber, glass fiber, carbon fiber, etc. It has good thermal and chemical resistance and high elasticity. Low friction does not damage shafts and stems. KAXITE-P400K -- Flexible Graphite Packing with Corrosion Inhibitor Corrosion inhibitor acts as a sacrificial anode to protect the valve stem and the stuffing box.