Braided from 100% genuine GFO fiber, a filament yarn made from finely ground particles of high quality graphite encapsulated in a Teflon matrix to eliminate graphite migration. For use in valves, centrifugal pumps, rotary pumps, reciprocating pumps, this packing combines the heat dissipation properties of Graphite, with the chemical resistance of Teflon. Equivalent to Garlock 5100 and Sepco ML-4002.