Mechanical Seals Blog

"In alignment with the overall mission of the FSA, its Mechanical Seal Division seeks to be recognized by customers, regulatory bodies, and FSA member companies as the primary source of technical information for sealing solutions and their application in all matters relating to standards and education. Through our efforts, we will enhance the reliability and effectivity of this critical technology."    

Sealing High-Speed Shafts in Turbomachinery

Rotating liquid pump shafts that are originally sealed with soft packings mostly use contacting face seals, also known as mechanical seals. Typical rotational speeds are roughly between 1,000 and 3,600 revolutions per minute (rpm). In turbomachinery — such as compressors and expanders—the rotational speeds are higher and mechanical seals would not
immediately appear to be an option, due to greater rubbing speeds along with a lack of liquid cooling and lubrication.
Nevertheless, from the late 1970s when they were first marketed, noncontacting mechanical seals, known as dry gas seals in cartridge form, have been used in most gas turbomachinery.

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