PRODUCTS
MA390/MA391
Slimline Cartridge Seal
- Cartridge
- Balanced
- Independent of direction of rotation
- Stationary multiple springs
- Springs and pin located on the atmospheric side
Product specification example
Standards and approvals
EN 12756
ISO 3096
Materials
Seal face (MA290, MA390): High density
carbon graphite
Seal face (MA291, MA391): Silicon carbide (Q1)
Seat (MA290/291, MA390/391): Silicon carbide (Q1)
Metal parts: CrNiMo steel 316 (G)
Secondary seals: FKM (V)
Operating range
MA290 / MA390:
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: 0.3wt. %
MA291 / MA391:
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 wt.%
Product variants
MA390 (MA391)
Axially downsized type of MA290 (MA291).
Applicable ranges, performance data and figures can serve only as a guide for selection and therefore in actual use there will be some cases where general specifications cannot be applied due to unknown factors or constraints.
Please check the applicability before use.
The contents are subject to change without notice for improvement.
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