This PTFE filled molded packing delivers an excellent bearing surface and longer service life than conventional packing. It is self-lubricating with a low coefficient of friction, which makes it ideal for steam temperatures to 550F (290C) or for air-operated soot blowers. FLUORORAY BLUE packing not only offers superb resistance to corrosion, but also provides excellent creep and cold flow resistance as well. Temperatures to 550F (290C) and lower. PH range 0 - 14.