CSR

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CSR

CSR
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Item Description
1 Shaft sleeve
2 Segmented carbon ring
3 Garter spring
4 Housing of standardized sub-cartridge
5 Housing (size matched to installation space)
D Separation gas

CSR

Features

  • Contacting bushing seal
  • Gas-lubricated
  • Bi-directional
  • Ready-to-fit cartridge unit

Advantages

  • Very low leakage
  • No increased leakage in static operation
  • Small gas consumption
  • Optimized carbon material for operation with ultra dry nitrogen
  • For continuous operation with little shutdowns and slow roll operation >10m/s

Operating range

Shaft diameter:
24.5 … 320.3 mm (0.96" … 12.61")
Design pressure:
p = 0.5 … 10 bar (7.25 … 145 PSI)
Operating pressure:
p = 0.5 ... 0.8 bar (7.25 ... 11.60 PSI)
Temperature:
t = -20 °C … +200 °C (-4 °F … +392 °F)
Sliding velocity:
vg = 10 …140 m/s (33 … 459 ft/s)
Separation gas dew point at 0.8 bar (11.6 PSI):
t = -50 °C … -20 °C (-58 °F … -4°F)*

* This limitation does not apply to CSR10.

Materials

Seal face: Carbon graphite impregnated
Secondary seals: FKM
Shaft sleeve: Stainless steel TC-coated
Metal parts: 1.4006 or other stainless steels.

Standards and approvals

  • NACE
  • API 692

Notes

Contacting bushing seals feature very low gas consumption for both dynamic and static operation modes. In static operation the carbon segments will contact the shaft reducing gas consumption to a minimum. In dynamic operation, the profiled inner surface of the segmented ring will ensure an aerodynamic lift-off at circumferential speeds >10 m/s (33 ft/s). The segmented carbon rings float on a very thin gas film of few µm.

Dimensions on request.


Product variants

CSR version for dry nitrogen

The CSR separation seal is also available for operation with very dry nitrogen with no limitations regarding dew point. Newly developed carbon ring materials ensure smooth operation even when the CSR is supplied with very pure nitrogen, from e.g. cryogenic production. The reliability of the system can be increased significantly as a result.

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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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