RigiSeal

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RigiSeal

RigiSeal
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Item Description
1 Seal face, stationary | Option: Primary seal face with DiamondFace coating
2 Seat, rotating | Option: Primary seat with DiamondFace coating
3 Shaft sleeve
4 Labyrinth
5 Trust ring
6 Option: "Smart labyrinth"
7 Option: Labyrinth as back-up seal (PTFE labyrinth)
8 Housing (size matched to installation space)
9 Adapter Sleeve
10 Separation seal | Option: CobaSeal


A  Seal gas supply | Option: Improved seal gas extraction
W  Seal washing system
B  Vent
D  Separation gas supply

RigiSeal

Features

Developed in coorperation with MAN Energy Solutions, based on the extremely robust EagleBurgmann RoTechSeal

  • Modular design
  • As upgrade of MAN centrifugal compressors or for new projects
  • Availabe as single, double, or tandem seal
  • Gas-lubricated
  • Uni- or bi-directional
  • Ready-to-install unit
  • Optionally with separation seal such as labyrinths, carbon rings or EagleBurgmann CobaSeal

Advantages

The RigiSeal is the efficient sealing solution when the supply gas is particularly contaminated (e.g., by particles/liquids). Due to the modular design principle, the seal can be adapted on a case-by-case basis for existing machines as well as for new projects. For this purpose, the respective seal features are defined according to the prevailing operating conditions and/or the result of the failure analysis.

RotechSeal Features
  • "Smart Labyrinth"
  • DiamondFace coating
  • Self-cleaning 3D gas grooves
  • Soft torque transmission
  • Debris resistant dynamic sealing element
  • Leakage optimization
  • CobaSeal (co-axial separation seal)

Additional RigiSeal Features
  • Improved seal gas extraction (Subsea Compressor Technology)
  • Seal washing system
  • Simplified support system
  • Labyrinth as back-up seal (PTFE labyrinth)

Operating range

Shaft diameter:
d = up to 410 mm (16.14")
Pressure:
p = up to 450 bar (6,525 PSI) and more
Design-temperature:
t = -200 °C … +230 °C (-328 °F … +446 °F)
Sliding velocity:
vg = up to 227 m/s (744 ft/s)

Project specific special designs possible

Materials

Seal face: Silicon carbide with DLC- or DiamondFace-coating
Seat: Silicon carbide with DLC- or DiamondFace-coating
Secondary seals: PTFE or FKM
Metal parts: 1.4006, 1.4313-QT650, 1.4418, 1.4542, Inconel® or other stainless steels

Other materials on request

Standards and approvals

  • NACE
  • API 617
  • API 692

Notes

One of the biggest challenges in operating centrifugal compressors with dry gas seals is contamination from the supply gas. Liquids or particles in the supply gas are the main causes of shortened seal life. Thanks to special features, the RigiSeal extends the lifetime of a normal seal in a particularly wet and dirty environment or in very difficult applications.

Dimensions on request.

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The Eagleburgmann Group

Sealing technology for plants and machines

EagleBurgmann is one of the worldwide leading providers of industrial sealing technology. Mechanical seals, seal supply systems, magnetic couplings, carbon floating ring seals, expansion joints, gaskets and packings as well as comprehensive services are used wherever reliability and safety are needed.

Mechanical seals and more

Sealing technology by EagleBurgmann is used worldwide in oil and gas industries, refineries, the petrochemical, chemical, and pharmaceutical industries, food processing, energy, water, mining, paper, aerospace, and other industries. Close to 5,800 employees provide their ideas, solutions, and commitment so that customers can rely on our sealing technology.

What makes us stand out is our excellent quality, great innovative capacity, and an extensive product portfolio for nearly all industrial processes and fields of application. Our product portfolio includes everything from mechanical seals and seal supply systems to magnetic couplings, carbon floating ring seals, expansion joints, and gaskets and packings as well as comprehensive services. Since we are part of the German Freudenberg and Japanese EKK group, we have all the necessary resources for a firmly based reliable partnership.

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