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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
Recommended applications
Oil and gas industry
Refining technology
Petrochemical industry
LNG
CCUS
Hydrogen
Power generation
Nitrogen
Air
Centrifugal compressors
Blowers
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.