MDGS

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MDGS

MDGS
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MDGS Tandem seal with intermediate labyrith

A Primary seal gas supply
B Primary vent
C Secondary gas seal supply
S Secondary vent
D Separation gas supply

Item Description
1 Seal face, stationary
2 Seat, rotating
3 Thrust ring
4 Spring
5 Adapter
6 Shaft sleeve, intermediate sleeve
7, 8 Housing (size matched to installation space)
9 Carbon ring separation seal (CSE)
10 Intermediate labyrinth

Product links separation seals:
EagleBurgmann CSE
EagleBurgmann CSR
EagleBurgmann CobaSeal

MDGS

Features

  • Gas-lubricated
  • Bi-directional
  • Compact, radial design
  • Ready-to-fit cartridge unit, also available as a component seal
  • Single, double, tandem seal and tandem with intermediate labyrinth available

Advantages

  • Wear-free and contact-free operation
  • Self-cleaning 3D gas grooves
  • High gas film stiffness
  • Fits into small spaces (e.g. process gas screw compressors)
  • Available in various materials for optimized chemical resistance
  • Proven, reliable and economical solution

Operating range

Shaft diameter:
d1 = 48 ... 200 mm (1.89" ... 7.87")
Pressure:
p = 0 … 50 bar (0 … 725 PSI)
Temperature:
t = -20 °C … +200 °C
(-4 °F … +392 °F)
Sliding velocity:
vg = 0.6 … 200 m/s (2 … 656 ft/s)

Materials

Seal face: Carbon graphite
Seat: Ductile stainless steel with DM-TiN coating
Secondary seals: FKM
Metal parts: 1.4006 or other stainless steels.

Standards and approvals

  • NACE
  • API 692
  • Compliant to TA Luft (German Clean Air Act) (double seal, tandem seal)

Notes

EagleBurgmann MDGS are rugged seals for screw compressors. They have a rotating ring made from ductile material with a high-performance coating. Rotating rings are “in-situ shrouded”, making them practically indestructible. The coating offers excellent wear resistance in the low speed range (e.g. coast-down operation) in which contact between the seal faces is unavoidable.

The stationary, spring-mounted system is optionally available as a sub-cartridge in combination with a rotating seat made from ductile material. A secondary sealing function using O-rings allows it to be applied as a component seal.

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.

EagleBurgmann WORLDWIDE