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TG8U-TG9U

TG8U-TG9U

John Crane Type8-1/Type 109 Replacement
TG8U Auxiliary seal is rubber 0-ring structure
TG9U Auxiliary seal is PTFE wedge ring structure
Detail Information
Features
  Multiple Spring Design
  Unbalanced Seal
  Bi-directional
  Equivalent to Type8-1
                         Type109
Recommended Applications
  Chemical industry
  Industry pumps 
  Process Pumps
  Oil refining and petrochemical industry 
  Other Rotating Equipment
Operating range
Shaft diameter: d1=18...100mm(0.750'' ...4.000'')
Pressure:  p=0...2.4Mpa(348psi)
Temperature: t = -40 °C ...200 °C(-40°F to 392°F)(TG8U)
                      t = -29°C ...260 °C(-20.2°F to 500°F)(TG9U)
Sliding velocity: Vg≤25m/s(82ft/s)(5000fpm)
Notes: The range of preesure,temperature and sliding velocity is depend on seals combination materials
Product Structure
Combination Materials
 1. Rotary Face 
     Carbon graphite, resin impreg  AK
     Reaction Bonded Sic RBSiC  O
     Sintered Silicon Carbide SSlC  O1
     Tungsten Carbide.Ni-binder  W
 2. Stationary Seat 
     Elastomers 0-ring(TG8U)
     Fluorocarbon Rubber FKM  V
     Etylene Propylene Rubber EPDM  E
     Perfluorocarbon Rubber FFKM  K
     PTFE wedge ring (TG9U)
     Pure PTFE  T
 3. Auxiliary Seal 
     Fluorocarbon-Rubber (Viton) V
     Ethylene-Propylene-Diene (EPDM) E
     PTFE Enwrap Viton M1
 4. Spring 
     GrNiMo-Steel (AlSl316)  G
     HastelloyC-4  M
 5. Metal Parts
     GrNi-Steel (AlS1304)  F
     GrNiMo-Steel (AlSl316)  G
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