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Features
- For unstepped shafts
- Single seal
- Balanced
- Independent of direction of rotation
- Encapsulated rotating spring
Advantages
- Especially designed for solids containing and highly viscous media
- Springs are protected from the product
- Rugged and reliable design
- No damage of the shaft by dynamically loaded O-Ring
- Universal application
- Variant for operation under vacuum available
- Variants for sterile operation available
Operating Range
Shaft diameter:
d1 = 18 … 100 mm (0.625″ … 4″)
Pressure:
p1*) = 0.8 abs…. 25 bar (12 abs. … 363 PSI)
Temperature:
t = -50 °C … +220 °C (-58 °F … +430 °F)
Sliding velocity: vg = 20 m/s (66 ft/s)
Axial movement: ±0.5 mm
* An integral stationary seat lock is not needed within the permissible low pressure range. For prolonged operation under vacuum it is necessary to arrange for quenching on the atmospheric side.
Combination Materials
Rotary Face
Silicon carbide (RBSIC)
Carbon graphite resin impregnated
Antimony Impregnated Carbon
Stationary Seat
Silicon carbide (RBSIC)
Tungsten carbide
Auxiliary Seal
Fluorocarbon-Rubber (Viton)
Ethylene-Propylene-Diene (EPDM)
Spring
Stainless Steel (SUS304)
Stainless Steel （SUS316)
Metal Parts
Stainless Steel (SUS304)
Stainless Steel （SUS316)
Recommended Applications
- Pharmaceutical industry
- Power plant technology
- Pulp and paper industry
- Water and waste water technology
- Mining industry
- Food and beverage industry
- Sugar industry
- Dirty, abrasive and solids containing media
- Thick juice (70 … 75 % sugar content)
- Raw sludge, sewage slurries
- Raw sludge pumps
- Thick juice pumps
- Conveying and bottling of dairy products
Item Part no. to DIN 24250
Description
1.1 472/473 Seal face
1.2 485 Drive collar
1.3 412.2 O-Ring
1.4 412.1 O-Ring
1.5 477 Spring
1.6 904 Set screw
2 475 Seat (G16)
3 412.3 O-Ring
WHJ92N data sheet of dimension(mm)
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