Pusher Seal
Elastomer Seal
Metal Bellows
Standard Cartridge
Split Seal
Gas Lubricated
Engineered Seal
Compressor Seal
Agitator Seal
Marine Seal
Mechanical Seal MA390 MA391
Type in the H-Brinker HBA390 HBA391
MA390 MA391 Operating range
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: 0.3 %
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 %
Description
| Item | Description |
| 1 | Seal face |
| 2, 5, 7 | O-Ring |
| 3 | Spring |
| 4 | Seat |
| 6 | Drive collar |
| 8 | Set screw |
| 9 | Seal cover |
| 10 | Gasket |
| 11 | Assembly fixture |
| 12 | HSH cap screw |
MA390 MA391 Seal Features (HBA390)
- Cartridge
- Balanced
- Independent of direction of rotation
- Stationary multiple springs
- Springs and pin located on the atmospheric side
MA390 MA391 Seal Material
- Seal face (MA390): High density carbon graphite
- Seal face (MA391): Silicon carbide (Q1)
- Seat (MA390/391): Silicon carbide (Q1)
- Metal parts: CrNiMo steel (G)
- Secondary seals: FKM (V)
Advantages MA390 MA391 (HBA390) Seal
- 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
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
Dimension Table
| d | d0 | d1 min. | d1 max. | d2 | d3 | l1 | l2 | l3 | l4 |
|---|---|---|---|---|---|---|---|---|---|
| 20 | 50 | 35 | 46 | 53 | 104 | 12 | 14 | 53 | 12 |
| 24 | 55 | 40 | 51 | 58 | 104 | 12 | 14 | 58 | 12 |
| 25 | 55 | 40 | 51 | 58 | 104 | 12 | 14 | 58 | 12 |
| 29 | 60 | 45 | 56 | 63 | 108 | 12 | 14 | 63 | 12 |
| 30 | 60 | 45 | 56 | 63 | 108 | 12 | 14 | 63 | 12 |
| 35 | 65 | 50 | 61 | 68 | 118 | 12 | 12 | 68 | 14 |
| 39 | 70 | 55 | 66 | 73 | 118 | 10 | 12 | 73 | 14 |
| 40 | 70 | 55 | 66 | 73 | 118 | 10 | 12 | 73 | 14 |
| 45 | 75 | 60 | 71 | 78 | 128 | 10 | 12 | 78 | 14 |
