Introduction
DPH Engineering are Authorized Distributors of brush Seals. In addition to conventional labyrinth sealing technologies, Waukesha Bearings 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, Waukesha Bearings 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. DPH Engineering experience has taken the technology beyond aerospace into the harsh and demanding environments of industrial turbomachinery. With more than 1,600 units in operation, DPH Engineering brush seals are used in a wide variety of applications, including land-based gas turbines, process steam turbines, utility steam turbines, centrifugal compressors, and turboexpanders.
Design and Configurations:
DPH Engineering patented brush seal, US Patent 6,231,047, was originally developed for and continues to serve aerospace applications. 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 turn times, ease of installation, and seal repair.
Configurations:
- Split ring
- Segmented
- Cartridge
- Linear strip
Sizes (Diameter):
- For strip: 152 mm (6″) and up
- For ring: 19 mm (0.75″) to 229 mm (9″)
Materials of Construction:
- Housing: Stainless steel, Inconel, others
- Bristles: Haynes 25
Brush Seals for Gas & Steam Turbines:
- Pressure: Up to 300 psid (20 bar) per brush seal stage
- 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)
