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
