Categories
- Conical Spring Mechanical Seals
- Parallel Spring mechanical Seals
- Multiple Spring mechanical Seals
- Wave Spring Mechanical Seal
- Metal Bellows mechanical seal
- Cartridge mechanical seal
- PTFE-Bellows Seal
- Parallel Spring Diaphragm Mechanical Seal
- Elastomeric Bellows mechanical seal
- Brand Pump Seals-General Industrial
- Brand Pump Seals-Food and Beverage Industry
- Stationary seat Type

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
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
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 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
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