Circumferential Carbon Seals
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Circumferential Carbon Seals
Stein Seal’s line of precision crafted circumferential carbon seals are perfect for low-pressure applications where minimal, controlled gas leakage, high temperatures, unlimited axial shaft movement and low wear are critical. They can be used independently or as part of a sealing system. The exceptionally lightweight carbon material and split housing capability make it easy to install, remove or repair seals in limited space areas.
Common applications include:
- Aircraft engine main shafts and accessory gearboxes
- Recirculation pumps
- Process industry
- Propulsion systems
Configurations include standard single ring, back-to-back, face-to-face, or a tandem arrangement.
Key Features:
- Unique design increases flexibility to provide better sealing
- Special gap segments permit the seal to adjust dimensionally for minimal leakage
- Distinctive fabrication reduces pressure loading to maximize seal life
- The use of compression and garter springs ensures that the segments remain in contact with mating surfaces during low delta pressure and shutdown conditions
Types of Circumferential Seals:
- Clearance Seals
- Liquid Seals
- Film riding
- Hydrostatic
- Gas Seals
- Hydrodynamic
General Performance Characteristics:
- Shaft rotation speeds up to 183 meters per second (600 feet per second)
- Temperature ranges up to 538° C (1000° F)
- Pressure ranges up to 586 KPa (85 psid)
- Diameter sizes ranging from 23.495 to 1054.100 millimeters (0.925 to 41.500 inches) with no practical upper limit restriction
- Leakage rates remain consistent over the life of the seal
- Seal life is rated at over 20,000 hours