With around 250 locations and 90 serve centers, we are represented in the most important economic regions of the world. The advantages are clear: short paths to our customers, fast response times and a shared language.
Extremely short length design - the total length including the seal cover is less than 50 mm
Easy installing on the pumps without modifying the stuffing box
Excellent followability due to no influence from run-out, squareness or vibration of the shaft
Mounted outside the stuffing box for providing excellent air cooling performance
Un-wetted springs and knock pins for protecting from lockout by liquid
Operating range
MA290:
Pressure: p = … 20 bar (290 PSI)
Temperature: t = -20 °C …160 °C (-4 °F ... 320 °F) (oil), 0 °C ... 60 °C (32 °F ... 140 °F) (water)
Sliding velocity: vg = max. 20 m/s (66 ft/s)
Viscosity: 0.5 Pa·s
Solids content: 0.3 %
MA291:
Pressure: p = … 16 bar (232 PSI)
Temperature: t = -20 °C …160 °C (-4 °F ... 320 °F) (oil), 0 °C ... 60 °C (32 °F ... 140 °F) (water)
Sliding velocity: vg = max. 20 m/s (66 ft/s)
Viscosity: 3 Pa·s
Solids content: 10 %
Materials
Seal face (MA290): High density carbon graphite
Seal face (MA291): Silicon carbide (Q1)
Seat (MA290/291): Silicon carbide (Q1)
Metal parts: CrNiMo steel (G)
Secondary seals: FKM (V)
Standards and approvals
EN 12756
ISO 3096
Recommended applications
Petrochemical industry
Chemical industry
Pharmaceutical industry
Pulp and paper industry
Water and waste water technology
Food and beverage industry
Universally applicable
Centrifugal pumps
Eccentric screw pumps
Process pumps
Similar products
Cartex Dual seals
Dual seal
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Balanced
Independent of direction of rotation
Double pressure balanced
Integrated pumping device
Variants available: for eccentric screw pumps (-Vario) and gas-lubricated version (-GSDN)