Mechanical Seal MA390 / MA391

Type in the Iseal : ISA390 – ISA391

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 %

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 %

Advantages

Ultra-thin compact design -
the total length including the seal cover is only 33 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

Features