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    EagleBurgmann CobaSeal EN

    Uploaded by

    Cuong TranHung
    This document describes the CobaSeal mechanical seal, which is a gas-lubricated, bi-directional dry gas seal suitable for compressor applications. The CobaSeal uses separation gas routed through axial holes to create two leakage flows that lift the seal faces away from each other. It has an extremely low leakage rate and is insensitive to contamination, vibration, and changes in direction of rotation or stationary periods. The CobaSeal can also be used in a tandem arrangement with another dry gas seal for additional safety.

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    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    EagleBurgmann CobaSeal EN

    Uploaded by

    Cuong TranHung
    23 views3 pages
    This document describes the CobaSeal mechanical seal, which is a gas-lubricated, bi-directional dry gas seal suitable for compressor applications. The CobaSeal uses separation gas routed through axial holes to create two leakage flows that lift the seal faces away from each other. It has an extremely low leakage rate and is insensitive to contamination, vibration, and changes in direction of rotation or stationary periods. The CobaSeal can also be used in a tandem arrangement with another dry gas seal for additional safety.

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    EagleBurgmann_CobaSeal_EN

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    This document describes the CobaSeal mechanical seal, which is a gas-lubricated, bi-directional dry gas seal suitable for compressor applications. The CobaSeal uses separation gas routed through axial holes to create two leakage flows that lift the seal faces away from each other. It has an extremely low leakage rate and is insensitive to contamination, vibration, and changes in direction of rotation or stationary periods. The CobaSeal can also be used in a tandem arrangement with another dry gas seal for additional safety.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    23 views3 pages

    EagleBurgmann CobaSeal EN

    Uploaded by

    Cuong TranHung
    This document describes the CobaSeal mechanical seal, which is a gas-lubricated, bi-directional dry gas seal suitable for compressor applications. The CobaSeal uses separation gas routed through axial holes to create two leakage flows that lift the seal faces away from each other. It has an extremely low leakage rate and is insensitive to contamination, vibration, and changes in direction of rotation or stationary periods. The CobaSeal can also be used in a tandem arrangement with another dry gas seal for additional safety.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
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    Mechanical seals | Compressor seals | Separation seals

    CobaSeal

    Operating range Recommended applications


    Shaft diameter: Oil and gas industry
    29.5 ... 210 mm (1.16" ... 8.27") Refining technology
    Design pressure (vent): Petrochemical industry
    p = 0 … 15 bar (0 ... 218 PSI) Nitrogen
    Operating pressure: Air
    p = 2.7 bar (39.16 PSI) Temperature: Centrifugal compressors
    t = -20 °C … +150 °C (-4 °F … +302 °F) Blowers
    Sliding velocity:
    vg = 0 ... 150 m/s (0 ... 492 ft/s)
    Dew point: No limitation Notes
    Since it was launched on the market, this
    innovative sealing solution has proven its worth
    Materials worldwide in both first fit and retrofit
    Features Seal face: Silicon carbide* applications. It consists of a rotating seat made
    Seat: Ductile stainless steel* of ductile material and a stationary, spring-
    Gas-lubricated Secondary seals: FKM loaded seal face. The separation gas is routed
    Bi-directional Metal parts: 1.4006 through axial holes in the stationary seal ring
    Ready-to-fit cartridge unit into the middle of the sliding face. It is then
    Self cleaning 3D gas grooves * With special EagleBurgmann high divided in the sealing gap into two leakage flows
    Aerostatic and aerodynamic lift-off performance iDLC (in situ Diamond-Like- which are routed to the inner and outer
    Carbon) coating diameters of the seal face.
    Advantages
    Dimensions on request.
    Extremely low leakage Standards and approvals
    Double arranged (co-axial) dry gas seal with NACE
    just one pair of seal faces
    Insensitive to oil contamination due to its
    special design
    Wear-free, non-contacting operation in all
    conditions
    Insensitive to radial vibrations due to axial
    sealing gap
    Slow-roll or turning operation capable (static
    lift-off)
    No limits regarding dew point of separation
    gas (silicon carbide instead of carbon)
    Lower N2 consumption than any other
    system
    N2 can be switched off during standstill - the
    gap will close and still provide the best oil
    sealing performance
    Best in class oil sealing by extremely small
    sealing gap and sling effect of rotating ring

    All technical specifications are based on extensive tests and our many years of experience. The diversity of possible applications means, 21.07 2015 © EagleBurgmann
    however, that they can serve only as guide values. We must be notified of the exact conditions of application before we can provide any www.eagleburgmann.com
    guarantee for a specific case. Subject to change.
    Mechanical seals | Compressor seals | Separation seals Page 2/3

    Item Description
    1 Seal face, stationary
    2 Seat, rotating
    3 Thrust ring
    4 Spring
    5 Shaft sleeve and seat retainer
    6 Housing (size matched to installation
    space)
    D Separation gas

    Installation, Details, Options

    Piping and instrumentation diagram of a


    CobaSeal (pressure controlled separating gas
    supply).
    Alternative solution: Differential pressure
    control for safe regulation of the separating
    gas pressure in any operating condition.

    All technical specifications are based on extensive tests and our many years of experience. The diversity of possible applications means, 21.07 2015 © EagleBurgmann
    however, that they can serve only as guide values. We must be notified of the exact conditions of application before we can provide any www.eagleburgmann.com
    guarantee for a specific case. Subject to change.
    Mechanical seals | Compressor seals | Separation seals Page 3/3

    Product variants

    Option:
    Single DGS + CobaSeal = Tandem seal

    The CobaSeal is not just an excellent


    separation seal. It can also be used as a true
    back-up seal for greater safety. A DGS-
    CobaSeal tandem arrangement can be
    operated at sealing pressures up to 20 bar
    (290 PSI). It does not need an intermediate
    labyrinth with N2 supply and existing single
    seals can be simply retrofitted, thus benefitting
    from increased operational safety. The single
    DGS + CobaSeal combination is also shorter
    than conventional tandem seals with
    separation seal and costs can be saved on the
    gas supply system in low pressure
    applications.
    Item Description
    1, 9 Seal face, stationary
    2, 10 Seat, rotating
    3, 11 Thrust ring
    4, 12 Spring
    5, 13 Shaft sleeve
    6 Adapter sleeve
    7, 14 Housing
    8 Labyrinth

    21.07 2015 © Phone +49 (8171) 23-0 All technical specifications are based on extensive tests and our many years of
    EagleBurgmann Germany GmbH & Co. KG Fax +49 (8171) 23-1214 experience. The diversity of possible applications means, however, that they can
    All technical specifications are based on extensive tests and our many years of experience. The diversity of possible applications means, 21.07 2015 © EagleBurgmann
    Äußere Sauerlacher Straße 6-10 info@eagleburgmann.com serve only as guide values. We must be notified of the exact conditions of application
    however, that they can serve only as guide values. We must be notified of the exact conditions of application before we can provide any www.eagleburgmann.com
    82515 Wolfratshausen /Germany www.eagleburgmann.com before we can provide any guarantee for a specific case. Subject to change.
    guarantee for a specific case. Subject to change.

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