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Insensitive to shaft deflections due to large axial movement ability
Advantages
Patented disk for improved centering across entire pressure operating range
Small outer diameter of bellows support (dbmin) enables direct retaining ring support, or smaller spacer rings
Optimal axial movement through self-cleaning of disk/shaft
No torsion on bellows
Shaft protection over entire seal length
Protection of seal face during installation due to special bellows design
Suitable for low-end sterile applications
Can be used as double seal in tandem or in a back-to-back arrangement
Operating range
Shaft diameter: d1 = 45 … 100 mm (1.77" ... 3.94")
Pressure: p1* = 12 bar (174 PSI),
vacuum ... 0.5 bar (7.25 PSI), up to 1 bar (14.5 PSI) with seat locking
Temperature: t = -20 °C … +80 °C (-4 °F … +176 °F)
Sliding velocity: vg = 10 m/s (33 ft/s)
Admissible axial movement: ±2.0 mm (±0.08")
* Max. operating pressure in a standard single stage/single suction overhung prosses pump with balance bores, back side impellor or flat backside design without throttle gaps or balance bores. If recommendations for a specific application are required please contact your EagleBurgmann specialist.