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TG669

TG669

John Crane Type 669 series replacement
welded metalThe Type TG669 series seal is a welded
metal bellowsrotating seal with 45°C bellow design
which makes the stress distribution more
reasonable and flexibility, toensure seals has
advantages of reliable sealing and good matching
property. The seal has excellent dynamic
performance and has a
wide range of applications.
Detail Information
Features
  Welded metal bellows
  Bi-directional
  Balanced
  0-ing auxiliary seal
  Comply with APl682 requirements
  Available with DOUBLE-PLY Bellows
  TG669 seal, equivalent to Type 609
Recommended Applications
Refining technology, Oil and gas industry
Process industry
Pumps
Special Rotating Equipment.
Operating range
Shaft diameter:  d1=1.000"...4.000"
Pressure:  p=0...2.5Mpa(362.5psi)
Temperature:  t = -75°C ...400 °C(-100°F to 752°F)-TG669M
                       t = -20 °C ...220 °C(-4°F to 428°F)-TG669T
Sliding velocity: Vg≤25m/s(or Vg≤5,000rpm)(82ft/s)

Notes: The range of preesure,temperature and sliding velocity is depend on seals combination materials
Product Structure
Combination Materials
1.BELLOWS
     AM350  T8                                inconel 718  M6
2.SEAL FACE
    Carbon graphite  A   
    antimony impreg                   Sintered Silicon    O1
    Sintered Silicon  O1               Carbide SSIC
    Carbide SSlC
3.AUXILIARY SEAL
    Flexible Graphite  G                Flexible Graphite  G
4.ROTARY HEAD
    Alloy 42  T4                                   All0y 42  T4
5.METAL PATRTS
   CrNiMo-steel  G                           All0y 625  T3
6.APPLICATION
   Mildly corrosive medium        Corrosive medium
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