DGS For a larger view, please mouseover the image.
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DGS Tandem seal with intermediate labyrinth

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 Shaft sleeve and seat retainer
6 Intermediate sleeve
7, 8 Housing (size matched to installation space)
9 Separation seal (CSR)
10 Labyrinth
11 Intermediate labyrinth

Product links separation seals:
EagleBurgmann CSE
EagleBurgmann CSR
EagleBurgmann CobaSeal
  • Gas-lubricated
  • Uni-directional or bi-directional
  • Ready-to-fit cartridge unit
  • Single, double, tandem and tandem with intermediate labyrinth available
  • Separation seals as labyrinths, carbon rings or CobaSeal are optionally available
  • Wear-free and contact-free operation
  • Self-cleaning 3D gas grooves
  • High gas film stiffness
  • Secure cupped retainer for seat
  • Available in various materials for optimized chemical resistance
  • Proven, reliable and economical solution
Shaft diameter:
ds1 = 29 ... 410 mm (1.14" ... 16.14")
p = 0 … 160 bar (2,320 PSI)
Design temperature:
t = -46 °C … +230 °C
(-51 °F ... +446 °F)
Sliding velocitiy:
vg = up to 227 m/s (744 ft/s)
Seal face: Silicon carbide with DLC coating, Carbon graphite
Seat: Silicon carbide with DLC coating
Secondary seals: FKM
Metal parts: 1.4006 or other stainless steels

Other materials on request.

Available also with EagleBurgmann DiamondFace technology.
  • Oil and gas industry
  • Refining technology
  • Petrochemical industry
  • Hydrocarbon gas
  • Ammonia
  • Nitrogen
  • Air
  • Centrifugal compressors
  • Turbo expanders
  • Blowers
Compressor seals of the DGS series are based on a common technology and technical features, for instance O-Rings as secondary sealing elements. The different product variants are tailored to particular fields of application. The advantage over other products on the market is hidden in the detail. For example, the torque is transmitted to the rotating seat by friction forces only. And thus no holes and resulting weakening of the material are needed.

Dimensions on request.