• API 682 4th Edition

SB-D Dual Seal

  • API 682 Category 2 and 3, Type A, Arrangement 3 seal
  • Dual seal in face-to-face configuration
  • Balanced design
  • Independent of direction of rotation
  • Cartridge construction
  • Stationary design with multiple springs
  • Designed with integrated pumping device for increased efficiency in circulation
  • Robust construction with shrink-fitted seal face
  • Heavy duty design of solid seat

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Details

  • 1,4

    Seal ring

  • 2,5,10,12,18,24

    O-ring

  • 3,6

    Back up ring

  • 7

    Spring

  • 8

    Mating ring

  • 9

    Shaft sleeve

  • 14

    Key

  • 15

    Pumping sleeve

  • 16

    Adapter

  • 17

    Cover

  • 19

    HSH cap screw

  • 20

    Set ring

  • 21

    Set screw

  • 22

    Assembly fixture

  • 23

    Hexagon bolt

  • LBI

    Liquid Barrier IN

  • LBO

    Liquid Barrier OUT

  • Accommodates shaft deflections due to stationary design
  • Can be designed for individual pump application with corresponding connection parts to be adopted to the pump seal chamber
  • Optimum heat dissipation due to integrated pumping device available for increased efficiency in circulation and optimized seat design
  • Cartridge unit factory assembled for easy installation, which reduces downtime
  • Trouble-free long long-term operation due to heavy duty single seat design with bandage
  • Can operate under high sliding velocities and high pressures
  • Multiphase pumps API 610/ISO 13709 pumps
  • Oil and gas industry
  • Refining technology
  • Chemical industry
  • Hot water
  • Sour water
  • Caustic soda
  • Amines
  • Crystallizing media
  • Crude oil
  • Process water
  • Crude oil feed pumps
  • Injection pumps
  • Seal rings: Blister resistant carbon, Silicon carbide SSiC (Q1), RBSiC (Q2)
  • Mating rings: Silicon carbide SSiC (Q1), RBSiC (Q2)
  • Secondary seals: EPDM (E), NBR (P), FKM (V), FFKM (K)
  • Springs: Hastelloy ® C-4 (M)* and C-276 (M5)
  • Metal parts: CrNiMo steel 316 (G) or equivalent, optional materials on request
    * Sealmatic standard
  • Shaft diameter:
    d1 = 40 … 110 (250) mm (1.57″ …4.33(9.84)”)
  • Pressure:
    p1 = 42 (150) bar (609 (2,175) PSI)
  • Temperature:
    t = –40 °C … +176 (+200) °C (-40 °F … +350 (+394) °F)
  • Sliding velocity:
    vg = 23 (60) m/s (76 (197) ft/s)
  • Axial movement: ±3.0 mm
  • Process side*:
    01, 02, 03, 11, 12, 13, 14, 21, 22, 31, 32, 41
    Between seals: 53A, 53B, 53C, 54
    Atmospheric side**: 61, 62, 65A, 65B
    * Piping plans 11 … 41:
    Integration in seal to be dimensionally checked
    **Throttle bushing on request

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