Features
Equivalent to Type HR
Single seal
Balanced
Independent of direction of rotation
Multiple springs stationary
Seat rotating
Seat arranged directly behind the impeller
Spring protection sleeve
Variant with cylindrical spring and acc. EN12756 (HRZ1) available
Variant as cartridge with/without guide sleeve for application with/without quench (HR2,HR3)
Dual seal as cartridge unit (HRKS-D) available
Operating range
Shaft diameter: dN = 36 ... 270 mm (1.4" ... 10.63")
Pressure: p1* = 16 bar (230 PSI)
Temperature: t = -20 °C ... +160 °C (-4 °F ... +320 °F)
Sliding velocity: vg = 10 m/s (33 ft/s)
*For operation under vacuum it is necessary to arrange for quenching on the atmosphere side.
Materials
Seal face: Silicon carbide (Q1, Q2)
Seat: Silicon carbide (Q1, Q2
Notes
Direction of installation:
From the impeller side: HR10
From the bearing side: HR11
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