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 AD Sintered Silicon O1 Sintered Silicon O1
antimony impreg Carbide SSlC Carbide SSIC
3.AUXILIARY SEAL
FKM V FKM V FKM V
EPDM E FFKM K 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
