• Gas Lubricated Seals for Pumps & Agitators

CTX-GSDN

  • Dual seal configuration
  • Balanced design
  • Cartridge construction
  • Stationary design with multiple springs
  • Seat design is rotary
  • Designed to remain in closed position in the event of buffer pressure failure
  • Can accommodate reverse pressure
  • Gas-lubricated design
  • Gas grooves design is available in Vgrooves and U-grooves (independent of direction of rotation)

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Details

  • 1,9

    Seal face

  • 2,5,7,10,12,18

    O-ring

  • 3

    Spring

  • 4,11

    Seat

  • 6

    Shaft sleeve

  • 8

    Cover

  • 13

    Adapter

  • 14

    Ring

  • 15

    Set screw

  • 16

    Retaining ring

  • 17

    Counter-sunk socket screw

  • 19

    Assembly fixture

  • 20

    HSH Cap Screw

  • 21

    Gasket

  • Seal faces are designed to be noncontacting during operation
  • Designed for environmental protection with high efficiency
  • Due to non-contacting design there is no friction on the seal faces and there is no heat generated at the seal or in the medium
  • Trouble free operations as complex components are not required to dissipate frictional heat
  • Chemical industry
  • Refining technology
  • Gases and liquids
  • Media which require high purity
  • Environmental harmful media
  • Pumps
  • Seal face: Silicon carbide (Q1/Q19)
  • Seat: Silicon carbide (Q19/Q1)
  • Secondary seals: FKM (V), EPDM (E), FFKM (K)
  • Spring: Hastelloy® C-4 (M)
  • Metal parts: CrNiMo steel (G), Hastelloy® C-4 (M)
  • Shaft diameter:
    d1 = 30 … 100 mm (1.18″ … 3.94″)
  • Pressure:
    p1 = 13 bar (189 PSI),
    p3 = 16 bar (232 PSI)
    with V-grooves (uni-directional)
    p1 = 9 bar (131 PSI),
    p3 = 12 bar (174 PSI)
    with U-grooves (bi-directional)
    Differential pressure (p – p ) = min. 3 bar (44 PSI)
  • Operating temperature limits for:
    EPDM -20 °C … +140 °C (-4 °F … +284 °F)
    FFKM – 20 °C … +120 °C (-4 °F … +248 °F)
    FKM -20 °C … +170 °C (-4 °F … +338 °F)
    Speed = 4 … 15 m/s (13 … 49 ft/s)
    Axial movement: ± 1.0 mm

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