May 2011

Special Report: Maintenance/Reliability

Testing and repair options for critical dry-gas seal: Updates

Do your research when sending compressor seals out for renovations

Carmody, C., AESSEAL plc

Upgrading from traditional compressor seals to advanced dry-gas seals (DGSs) is entirely feasible and has been pursued for approximately two decades. Over the last five years, DGS production for new compressors has increased as well as well-planned implementation of dry-seal retrofit options. However, primary emphasis on the manufacture of new DGSs has resulted in service issues related to product engineering. As with all industries where demand for new products outstrips capacity to support existing products, both pricing structure and lead time for component repairs have come under scrutiny. This author discusses the issues related to the repair and testing of DGSs. Advanced seal designs.

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