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TG685

TG685

EagleBurgmann Type MFL85N series replacement
The Type TG685 series seal is a welded metal
bellowsmotating seal with 45°C bellow design,
which makes thestress 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
  Comply with EN 12756 Standard
  Available with DOUBLE-PLY Bellows
  TG685 seal, equivalent to Type MFL 85N
Recommended Applications
Refining technology, Oil and gas industry
Process industry
Pumps
Special Rotating Equipment.
Operating range
Shaft diameter:  d1=18...100mm
Pressure:  p=0...2.5Mpa(362.5psi)
Temperature:  t = -40 °C ...290 °C(-4°F to 554°F)-TG685C
                       t = -20 °C ...220 °C(-4°F to 428°F)-TG685T
                       t = -20 °C ...150 °C(-4°F to 302°F)TG-685G
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
    CrNiMo-steel   G              AM350  T8                           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                           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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