February 2009

Bonus Report: Rotating Equipment

Precision face topography improves seal performance

Applied technology can minimize heat generation without sacrificing leakage

Parker, J., Flowserve Corp.

Since its introduction almost 100 years ago, the mechanical face seal functions similarly to its original design: two rings mechanically held against each other establish a very restrictive leak path. Advances in technology, design, materials and manufacturing techniques have built greater understanding of seal physics, enabling mechanical seals to be used in a vast array of rotating-equipment environments. Equipment environments and user demands have evolved requiring the mechanical seal to operate at higher speeds, pressures and temperatures, while also being used in larger sizes and on a greater variety of fluids. These demands pose significant challenges to successful performance. In a

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