• API 682 4th Edition

UFL850-D Dual Seal

  • API 682 Category 2 and 3, Type B, Arrangement 3 seal
  • Dual seal in back-to-back configuration
  • Balanced design
  • Independent of direction of rotation
  • Cartridge construction
  • For plain shafts
  • Rotary metal bellows design
  • Shrink fitted seal rings and solid mating rings

Details

  • 1.1.1,2.1.1

    Seal ring with Bellows Unit

  • 1.1.2,1.3,2.1.2,2.3,4,9,11

    O-ring

  • 1.1.3,2.1.3,13

    Set screw

  • 1.2,2.2

    Mating ring

  • 2.1.4

    Pumping ring

  • 3

    Shaft sleeve

  • 5

    Gland

  • 6

    Adapter Sleeve

  • 7

    Pin

  • 8

    HSH cap screw

  • 10

    Intermediate Gland

  • 12

    Set ring

  • 14

    Assembly plate

  • 15

    Hexagonal bolt

  • LBI

    Liquid Barrier IN

  • LBO

    Liquid Barrier OUT

  • Suitable for high and low temperature application
  • Compact design
  • No dynamically loaded O-ring which reduces chances of seal face hang-up
  • Pumping screw for media with higher viscosity also available
  • Short installation length possible
  • Rugged design for long operating life
  • Bellows design efficiently ensure self self-cleaning
  • Bellows design minimizes variation in face load due to shaft expansion or face wear
  • Resistant to abrasive particles in the medium, no shaft or sleeve fretting
  • API 610/ISO 13709 pumps
  • Chemical & Petrochemical industry
  • Cold media
  • Highly viscous media
  • Hot media
  • Power plant technology
  • Refining technology
  • Oil and gas industry
  • Power plant technology
  • LPG plants
  • Process pumps
  • Seal rings: Blister resistant carbon
  • Mating rings: Silicon carbide SSiC (Q1), RBSiC (Q2)
  • Bellows: Hastelloy ® C-276 (M5)
  • Option: Inconel® 718 (M6)
  • Secondary seals: FKM (V), FFKM (K), EPDM (E), NBR (P)
  • Metal parts: CrNiMo steel 316 (G), Hastelloy ® C-276 (M5)
  • Shaft diameter:
    d1 = 20 … 110 mm (0.79″ …4.33″)
  • Pressure:
    p = vacuum …20 bar (290 PSI)
  • Temperature:
    t = –40 °C … +200 °C (-40 °F … +392 °F)
  • Sliding velocity:
    vg = 23m/s (75 ft/s)
  • 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
    *Throttle bushing on request

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