Mechanical Seal MA290 / MA291

Type in the Iseal : ISA290 – ISA291

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

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

Features

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)

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