Features mechanical seal m7n
- For plain shafts
- Single seal
- Unbalanced
- Super-Sinus-spring
- Independent of direction of rotation
Advantages mechanical seal m7n
- Universal application opportunities
- Efficient stock keeping due to easily interchangeable faces
- Extended selection of materials
- Insensitive to low solids contents
Flexibility in torque transmissions - Self cleaning effect
- Short installation length possible (G16)
- Pumping screw for media with higher viscosity (M7..F)
Operating range mechanical seal m7n
- Shaft diameter:
d1 = 14 … 100 mm (0.55 ” … 3.94 “) - Pressure:
p1 = 25 bar (363 PSI) - Temperature:
t = -50 °C … +220 °C
(-58 °F … +428 °F) - Sliding velocity:
vg = 20 m/s (66 ft/s) - Axial movement:
d1 = up to 25 mm: ±1.0 mm
d1 = 28 up to 63 mm: ±1.5 mm
d1 = from 65 mm: ±2.0 mm
Materials mechanical seal m7n
- Seal face: Silicon carbide (Q1)
- Seat G9: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1)
Seat G4, G6 (Q1), Seat G13 (A, B) - Secondary seals: EPDM (E), FKM (V), FFKM (K)
- Springs: CrNiMo steel (G)
- Metal parts: CrNiMo steel (G), Duplex (G1)
| Item | Part no. to DIN 24250 | Description |
| 1.1 | 472 | Seal face |
| 1.2 | 485 | Drive collar |
| 1.3 | 474 | Thrust ring |
| 1.4 | 412.1 | O-Ring |
| 1.5 | 477 | Spring |
| 1.6 | 904 | Set screw |
| 2 | 475 | Seat (G9) |
| 3 | 412.2 | O-Ring |
Recommended applications mechanical seal m7n
- Process industry
- Chemical industry
- Pulp and paper industry
- Water and waste water technology
- Shipbuilding
- Lube oils
- Low solids content media
- Water / sewage water pumps
- Chemical standard pumps
- Vertical screw pumps
- Gear wheel feed pumps
- Multistage pumps (drive side)
- Circulation of printing colors with viscosity 500 … 15,000 mm2/s.
