Features mechanical seal h7n
- For stepped shafts
- Single seal
- Balanced
- Super-Sinus-spring or multiple springs rotating
- Independent of direction of rotation
- Integrated pumping device available (H7F, H75F)
- Variant with seat cooling available (H75G115)
Advantages mechanical seal h7n
- Universal application opportunities (standardization)
- Efficient stock keeping due to easily interchangeable faces
- Extended selection of materials
- Flexibility in torque transmissions
- Self cleaning effect
- Short Installation length possible (G16)
Operating range mechanical seal h7n
- Shaft diameter:
d1 = 14 … 100 mm (0.55″ … 3.94″)
(Single spring: d1 = max. 100 mm (3.94″)) - Pressure:
p1 = 80 bar (1,160 PSI) for d1 = 14 … 100 mm,
p1 = 25 bar (363 PSI) for d1 = 100 … 200 mm,
p1 = 16 bar (232 PSI) for d1 > 200 mm - Temperature:
t = -50 °C … 220 °C (-58 °F … 428 °F) - Sliding velocity: vg = 20 m/s (66 ft/s)
- Axial movement:
d1 up to 22 mm: ± 1.0 mm
d1 24 up to 58 mm: ± 1.5 mm
d1 from 60 mm: ± 2.0 mm
Materials mechanical seal h7n
- Seal face: Silicon carbide (Q1, Q2), Carbon graphite antimony impregnated (A), Aluminium oxide (V), CrMo cast steel (S)
- Seat G9: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1*, Q2*)
- Secondary seals: EPDM (E), NBR (P), FKM (V), FFKM (K)
- Springs: CrNiMo steel (G)
- Metal parts: CrNiMo steel (G), Duplex (G1)
* Cannot be combined with seal face made of S
| 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 seal h7n
- Process industry
- Oil and gas industry
- Refining technology
- Petrochemical industry
- Chemical industry
- Power plant technology
- Pulp and paper industry
- Food and beverage industry
- Hot water applications
- Light hydrocarbons
- Boiler feed pumps
- Process pumps
