Upgraded faces for dry running filter dryer seal Seal type: Flowserve Mixerpac 2552/125 Gas Lubricated Cartridge Seal A NASH inspection found incorrect face material in a dry running seal caused rapid face wear and poor seal performance. Upgrading the rotary seal rings to a grade of carbon more suitable for operation in dry nitrogen solved the problem Client challenge An Eire pharmaceutical manufacturer needed help to improve the performance of Flowserve Mixerpac 2552 pressurised double dry running mechanical seals fitted to a pair of Comber filter dryers. Average seal life was only 10 months, causing numerous unplanned outages and additional expensive seal changes. Seal repairs via the OEM were slow, costly anddid not improve seal performance. Our response Our filter dryer service partner

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