It is a braided packing made of expanded PTFE yarns with reinforced corner from continious aramid fiber, acombination of proved top qualities. This structure enhances the lubricability of aramid fiber and reinforced the strength of the pure PTFE packing. This special combination packing takes a very important role for high pressure piston pump. It is recommended for piston pump in the universally applicable within the PH range 2-13. It is suitable t be used in Chemical, petrochemical, pharmaceutical, food and sugar industries, pulp and paper mills, etc.