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Update on secondary seals for fluid machines

08.01.2014  |  Bloch, H. P.,  Hydrocarbon Processing Staff, Carmody, C.,  AESSEAL plc, Rotherham, UK

Keywords: [seals] [o-ring] [rotar] [compressor]

Elastomer-based O-rings are used as secondary sealing components in millions of fluid machines. Although O-ring seals are primarily intended for fluid containment between different but nonrotating components, there are also many other applications where “flying O-rings” are performing needed duties, ranging from fluid shut-off to making the rotor and stator into a nonseparable assembly. The unusual term “flying O-ring” implies that this flexing component can expand and contract, while an adjacent machine element either remains stationary or is rotating.

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