January 2001

Maintenance and Retrofitting

Gas-lubricated mechanical seals for pumps

New designs decrease the conversion cost for older pumps and improve reliability

Vanhie, E., Burgmann Seals America, Inc.

Concern for a clean environment, efficient energy use and life cycle optimization in the process industries motivated the search for better sealing solutions for industrial equipment such as pumps, compressors and agitators. Gas-lubricated mechanical seals have been successfully applied on compressors for many years. Consequently the technology was rapidly applied to pump applications. Over five years of experience in many pump applications has proven their benefits. Compact dual-gas seals offer technological benefits. These off-the-shelf-type, cartridge gas seals are suitable for retrofit of conventional process pumps equipped with narrow-type as well as with new, enlarged s

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