Carl H. Jones is the global product specialist for packing fibers sealant technologies at W.L. Gore & Associates. He has a B.S. in chemical engineering and an MBA in finance, with more than 30 years of experience in the fluid sealing industry.
Figure 2. Packing recommendations for valves and centrifugal pumps
More than 35 years later, various manufacturers provide a range of ePTFE/graphite compositions using different expanded PTFEs, lubricants and graphite combinations, and this material class is still the standard by which all general-service packings are measured. Those who work with compression packing today owe a debt of gratitude to one of the great industry pioneers, whose creativity introduced this breakthrough technology.
In light of an increased emphasis on sustainability, the ePTFE/graphite material is once again—35 years after its introduction—emerging as an important solution for optimizing resources used in the operation of centrifugal pumps.
Next Month: Back to Basics: Mechanical Seals
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