The Awe and Engineering of Space Exploration


The Awe and Engineering of Space Exploration

Metal Seals Master Catalog


Metal Seals Master Catalog

Airplane Turbine Engine Cutaway

3D Tour of Sealing Solutions and Acoustic Attenuation on Commercial Aircraft


3D Tour of Sealing Solutions and Acoustic Attenuation on Commercial Aircraft

Brush Seals


Brush Seals


Technetics Group Brush Seals – Designed to increase airflow efficiency in engines and compressors

Replacing labyrinth seals with brush seals from Technetics Group can reduce leakage by 5 to 17 times, thus providing significant turbomachinery efficiency and output gains.
Brush seals work by absorbing the radial deflections between the shaft and rotor during transient operation. The seal then follows the rotor back to the steady-state operating position to maintain minimum leakage. The brush pack is composed of thousands of finely packed 2.8 to 5.6 mil diameter wire bristles. The bristle material, a cobalt or nickel alloy, is selected to provide an optimal combination of wear properties and oxidation resistance. The backplates and side plates are typically fabricated from stainless steel or nickel alloys. The primary consideration is the thermal expansion and contraction of the case material.
Brush seals can be delivered as a single unit or in multiple segments. The bristles can be configured radially inward, radially outward or axially.




Features & Benefits


Benefits:
  • Reduced wear rate means longer life
  • Consistent flow provides predictable performance
  • Higher-pressure operation yields flexibility in design
  • Reduced heat generation ensures a cooler rotor



Product Applications


  • Aerospace Industry
  • Industrial Turbines
  • Marine Engines


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Have questions? A Technetics Group product specialist will get back to you to shortly.


Specifications




Resources

HELICOCARB® Carbon Brush Seal


HELICOCARB® Carbon Brush Seal


High-performance rotating sealing solutions for critical industrial applications.

The HELICOCARB® carbon brush seal, robust and easy to integrate, offers good adaptability to your service and operating conditions as well as performance improvements for your equipment. This sealing solution also allows you to reduce your total cost of ownership while ensuring the safety and reliability of your installation.

HELICOCARB® is a circular brush-seal whose internal diameter, in contact with a rotating shaft, consists of a carbon brush. A patented assembly enables it to efficiently compress a network of soft carbon bristles. A circular brush is created, with every bristle oriented towards the center of the seal. The arrangement of the assembly and the specific Technetics manufacturing process results in a high-quality carbon brush seal, whose performance is very consistent.




Features & Benefits


  • Improved overall equipment energy efficiency:
    • Leakage reduction: up to 90% gain compared to labyrinth seals (depending on conditions)
    • Low-friction torque resistance
  • Low shaft abrasion
  • Simple, robust and reliable
  • Easy to integrate and easy to install
  • Customizable design for optimized integration within assembly (materials casing, carbon fiber layer)
  • Improved lifetime
  • Bi-directional



Product Applications


The HELICOCARB® seal can replace existing seals in the following applications:

  • Centrifugal gas compressor
  • Aero engine
  • Bearing protection
  • Centrifugal pump
  • Industrial air fan
  • Gearbox


SPEAK WITH A SPECIALIST

Have questions? A Technetics Group product specialist will get back to you to shortly.


Specifications




Resources

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