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TG670

TG670

John Crane Type 670 series replacement
The Type TG670 series seal is a welded metal
bellows rotating seal with 45'c bellow design,
which makes the stress distribution more
reasonable and flexibility, to ensure 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-dire ctional
  Balanced
  0-ring auxiliary seal
  Comply with APl682 requirements
  Available with DOUBLE-PLY Bellows
  TG670G、TG670Tseals, equivalent to Type 676
  TG670Cseal, equivalent to Type 670
Recommended Applications
Refining technology, Oil and gas industry
Process industry
Pumps
Special Rotating Equipment.
Operating range
Shaft diameter:  d1=18...100mm(0.750"...4.000")
Pressure:  p=0...2.5Mpa(362.5psi)
Temperature:  t = -40 °C ...290 °C(-40°F to 554°F)-TG670C
                       t = -20 °C ...220 °C(-4°F to 428°F)-TG670T
                       t = -20 °C ...150 °C(-4°F to 302°F)-TG670G
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
    CriiMo-steel  G             AM350  M8                         Hastelloy C-276  M5
2.SEAL FACE
    Carbon graphite  A         Sintered Silicon  O1            Sintered Silicon    O1  
    antimony impreg                     Carbide SSlC                       Carbide SSIC
3.AUXILIARY SEAL
    FKM  V                                FKM  V                                 FKM  V        
    EPDM  E                              FFKM                                PEP  M1
    NBR  P                                                                                    FFKM  K
4.ROTARY HEAD
    CrNiMo-steel  G                   All0y 42  T4                 Hastelloy C-276  M5     
5.METAL PATRTS
    CrNiMo-steel  G                    CrNiMo-steel  G           Hastelloy C-276  M5
6.APPLICATION
   Non-corrosive medium      Mildly corrosive medium      Corrosive medium
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