• Standard Cartridge Seals

MTX Dual Seals

  • Dual seal configuration
  • Balanced design
  • Independent of direction of rotation
  • Cartridge construction
  • Metal bellows design
  • Designed with integrated pumping device for increased efficiency in circulation
  • Stationary O-ring design
  • Seals with API Plan 52 and API Plan 53/54

Details

  • 1

    Bellows unit

  • 2, 5, 7,10, 13, 15

    O-Ring

  • 3, 16

    Set screw

  • 4

    Seat

  • 6

    Shaft sleeve

  • 8

    Cover

  • 9

    Seal face

  • 11

    Spring

  • 12

    Seat

  • 14

    Drive collar

  • 17

    Retaining ring

  • 18

    Assembly fixture

  • 19

    Hex socket head screw

  • 20

    Gasket

  • 21

    Screw Plug

  • 22

    Gasket

  • Ideal for use in process pump standardization
  • O-ring is dynamically loaded to prevent shaft damage.
  • Dimensional modification of the stuffing box chamber is not required due to short radial installation height
  • Ideal to convert and retrofit pumps with packings and large volume OEM production
  • Cartridge unit factory assembled for easy installation, which reduces downtime
  • Rugged design for long operating life
  • Bellows design efficiently ensure selfcleaning
  • Suitable for high temperature applications
  • Refining technology
  • Petrochemical industry
  • Hot media
  • Cold media
  • Highly viscous media
  • Pumps
  • Special rotating equipment
  • Seal face: Carbon graphite (A),
    Silicon carbide (Q1)
  • Seat: Silicon carbide (Q1),
    Tungsten carbide (U2)
  • Secondary seals: FPM (V), EPDM (E), FFKM (K)
  • Bellows: Inconel® 718 (M6)
  • Springs: Hastelloy® C-4 (M)
  • Metal parts: CrNiMo steel (G), Duplex (G1)
  • Shaft diameter: d1 = 25 … 80 mm (1″ … 3.15″)
  • Temperature : t* = –40 °C … +220 °C
    (– 40 °F … + 428 °F)
  • Pressure: p 1 = 25 bar (232 PSI)
  • Speed = 20 m/s (66 ft/s)
  • Barrier fluid circulation system: p3max = 16 bar (232 PSI)
    Δp (p3 – p1 ) ideal = 2 … 3 bar (29 … 44 PSI)
    Δp (p3 – p1 ) max.
    = 10 bar (145 PSI) at <120 °C (<248 °F)
    = 5 bar (73 PSI) at ≤ 220 °C (≤ 232 °F)
  • API Plan 52 (53/54)
    Pump startup:
    Δp (p3 – p1 ) max.16 bar (232 PSI) allowed
    * Operating limits of O-rings to be observed
  • Dimensions, items and descriptions as for MTX-DN, but with optimized seal face geometry for pressurized operation according to API Plan 53/54. A barrier fluid system (e.g. Sealmatic BFS2000) is necessary
  • Pressure: p1 = 10 bar (145 PSI)
  • Speed = 20 m/s (66 ft/s)
  • Barrier fluid circulation system:
    p3max = 16 bar (232 PSI)
    Δp (p3 – p1) ideal = 2 … 3 bar (29 … 44 PSI)
    Δp (p3 – p1) max = 16 bar (232 PSI) API Plan 53/54
  • Pump startup:
    Δp (p3 – p1) max = 16 bar (232 PSI) allowed

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