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Features
- For unstepped shafts
- Single seal
- Balanced
- Independent of direction of rotation
- Metal bellows rotating
Advantages
- For extreme temperature ranges
- No dynamically loaded O-Ring
- Self-cleaning effect
- Short installation length possible
- Pumping screw for highly viscous media available (dependent on direction of rotation)
Operating Range
Shaft diameter:
d1 = 16 … 100 mm (0.63″ … 4“)
Externally pressurized:
p1 = … 25 bar (363 PSI)
Internally pressurized:
p1 <120 °C (248 °F) 10 bar (145 PSI)
p1 <220 °C (428 °F) 5 bar (72 PSI)
Temperature: t = -40 °C … +220 °C
(-40 °F … 428) °F,
Stationary seat lock necessary.
Sliding velocity: vg = 20 m/s (66 ft/s)
Notes: The range of preesure,temperature and sliding velocity is depend on seals
Combination Material
Rotary Face
Silicon carbide (RBSIC)
Carbon graphite resin impregnated
Tungsten carbide
Stationary Seat
Silicon carbide (RBSIC)
Tungsten carbide
Elastomer
Fluorocarbon-Rubber (Viton)
Ethylene-Propylene-Diene (EPDM)
PTFE Enwrap Viton
Bellows
Alloy C-276
Stainless Steel （SUS316)
AM350 Stainless Steel
Alloy 20
Parts
Stainless Steel (SUS304)
Stainless Steel (SUS316)
Mediums: Hot water, oil, liquid hydrocarbon, acid, alkali, solvents, paper pulp and other medium-and-low-viscosity content.
Recommended Applications
- Process industry
- Oil and gas industry
- Refining technology
- Petrochemical industry
- Chemical industry
- Hot media
- Cold media
- Highly viscous media
- Pumps
- Special rotating equipment
- Oil
- Light hydrocarbon
- Aromatic Hydrocarbon
- Organic solvents
- Week acids
- Ammonia
Item Part no. DIN 24250 Description
1.1 472/481 Seal face with bellows unit
1.2 412.1 O-Ring
1.3 904 Set screw
2 475 Seat (G9)
3 412.2 O-Ring
WMFL85N Dimension data sheet (mm)
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high quality metal bellow mechanical seals replace burgamnn WMFL85N, Being guided by customer demands, aiming at improving the efficiency and quality of customer service, we constantly improve solutions and provide more in depth services. We sincerely welcome friends to negotiate business and start cooperation with us. We hope to join hands with friends in different industries to create a brilliant future.
