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Brush Seals

In addition to conventional labyrinth sealing technologies, Bearings Plus provides compliant brush sealing systems that can be applied to a wide variety of rotating equipment. Typically used in air, steam, or process gas applications, Bearings Plus brush seal product offerings reduce the leakage gap between the sealing surface and rotor. The compliancy of a brush seal allows the bristles to deflect with minimal wear, thereby maintaining a small leakage gap over time and increasing operational efficiencies. Brush seals have been shown to reduce leakage by up to 80%

With a growing installation list of more than 1,600 units, Bearings Plus brush seals are used in a wide variety of applications, including land-based gas turbines, utility steam turbines, centrifugal compressors and turbo-expanders.                   

Operating parameters:

  • Pressure: Up to 300 psid (20 bar) per row
  • Temperature: Up to 650°C (1,200°F)
  • Surface speed: Up to 335 m/s (1,100 ft/sec)
  • Environments: gas path (air, steam); bearing (air/oil)Brush seal bristle pack

Materials of construction:

  • Housing: Stainless steel, Inconel, others
  • Bristles: Haynes 25

Sizes and configurations:

  • Diameter: 19 mm (0.75") to 3,050 mm (120")
  • Solid ring
  • Split ring
  • Segmented
  • Cartridge
  • Linear strip

Our patented brush seal, US Patent 6,231,047, was originally developed for and continues to serve aerospace applications, with millions of successful operating hours since the first installation in the 1980s. Bearings Plus has taken the technology beyond aerospace into the harsh and demanding environments of industrial turbomachinery. 

The uniqueness of our product rests with its flexible sizing and replaceable bristle pack. These two features alone are technology differentiators and provide the benefits of quick turnaround times, ease of installation, and seal repair. These benefits coupled with efficiency gains provide valuable savings in solving your critical sealing needs.

Our brush seal offering can be divided into three primary areas of application:

  
If you would like us to evaluate your application, please complete the Brush Seal Inquiry Sheet and submit it through our online contact form

Download the Brush Seal Information Sheet     Submit the Brush Seal Inquiry Form

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