Features mechanical seal hrn
- Single seal
- Balanced
- Independent of direction of rotation
- Stationary springs
- Dual seals in tandem as well as back-to-back arrangements (also in combination with H10 seal)
Advantages mechanical seal hrn
- Safe operation (no fractures) because of seal face locking by square pin
- Spring unit averted from the product so no sticking and clogging of the springs
- Suitable for pressure reversals
- Operation in vacuum without additional seat locking possible
- No damage of the shaft by a dynamically loaded O-Ring
- Small installation sizes
- Best suitable for conversions, no adaptations of the pump
- Insensitive to solid containing and abrasive media
- Advantages of a balanced seal even with plain shafts
- Insensitive to shaft movements because of the stationary design
Operating range mechanical seal hrn
- Shaft diameter:
d = 18 … 100 mm (0.71″ … 3.94″) - Pressure: p1*) = 25 bar (363 PSI)
- Temperature:
t = -40 °C … +220 °C (-40 °F … 428 °F) - Sliding velocity: vg = 20 m/s (66 ft/s)
- Axial movement: ±1.0 mm
* Additional seat locking is not needed in vacuum operation. For operation under vacuum it is necessary to arrange for quenching on the atmosphere side.
Materials mechanical seal hrn
- Shaft diameter:
d = 18 … 100 mm (0.71″ … 3.94″) - Pressure: p1*) = 25 bar (363 PSI)
- Temperature:
t = -40 °C … +220 °C (-40 °F … 428 °F) - Sliding velocity: vg = 20 m/s (66 ft/s)
- Axial movement: ±1.0 mm
* Additional seat locking is not needed in vacuum operation. For operation under vacuum it is necessary to arrange for quenching on the atmosphere side.
| Item | Part no. to DIN 24250 | Description |
| 1.1 | 472 | Seal face |
| 1.2 | 412.1 | O-Ring |
| 1.3 | 485 | Retainer |
| 1.4 | 477 | Spring |
| 1.5 | 412.2 | O-Ring |
| 2 | 475 | Seat |
| 3 | 412.3 | O-Ring |
| 4 | 485 | Drive collar |
| 5 | 412.4 | O-Ring |
| 6 | 904 | Set screw |
Recommended applications seal hrn
- Water and waste water technology
- Refining technology
- Dirty, abrasive and solid containing media
Fugitive hydrocarbons (no API seal!) - Sticky and stringy media
- Chemical standard pumps
- Sewage pumps
