API 682 4th Edition
Category 2/3 - 3CW - FF

SB-D Dual Seal
Category 2/3 3CW-FF

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Mechanical Seals

SB-D Dual Seal

API 682 4th Edition Category 2&3
Seal Type A (Stationary) Configuration 3CW-FF (Contacting Wet – Face-to-Face)

Product Description

  • 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
Details
Item No. Description
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

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Sealmatic Seals
Sealmatic Seals
Technical Features
  • 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

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