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TG74BD

TG74BD

EagleBurgmann H74-D Series Replacement
PTFE wedge,
Mutil-Spring construction mechanical seals
Type 74BD is suitable
for use with corrosive fluid media, such as
typically corrosives,
and chemicals.
Detail Information
Features
 Double seal
 Balanced
 Bi-directional
 Multiple springs
 For stepped shafts
 EN 12756 Standard
 Equivalent to H74-D
Recommended Applications
  Chemical industry
  Industry pumps 
  Process Pumps
  Oil refining and petrochemical    industry 
  Other Rotating Equipment
Operating range
Shaft diameter: d1=14...150mm
Pressure: p=0...2.5Mpa(362.5psi)
Temperature: t = -40 °C ..+220 °C(-40°F to 428°F)
Sliding velocity: Vg≤20m/s(65.6ft/s)
Notes: The range of preesure,temperature and sliding velocity is depend on seals combination materials
Product Structure
Combination Materials
 1. Rotary Face 
     Reaction Bonded Sic RB SIC  O
     Tungsten Carbide.Ni-bin der   W
 2. Stationary Seat 
     Carbon graphite, resin impreg  AK
     Reaction Bonded Sic RBSlC  O
     Tungsten Carbide.Ni -binder  W
 3. Auxiliary Seal 
     Fluorocarbon Rubber FKM  V
     Etylene Propylene Rubber EPDM  E
     Perfluorocarbon Rubber FFKM  K
 4. Spring 
     GrNi-Steel (AlS1304)  F
     GrNiMo-Steel (AlS1316)  G
     HastelloyC-4  M
 5. Metal Parts
     GrNi-Steel (AlS1304)  F
     GrNiMo-Steel (AlS1316)  G
     HastelloyC-4  M
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