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| Item no. | Description |
|---|---|
| 1 | Seal face, atmosphere side |
| 2 | Seal face, product side |
| 4, 5, 13, 14 | O-Ring |
| 11 | Seat, product side |
| 12 | Seat, atmosphere side |
HSH-D
Features
- For top entry drives
- Double seal
- Balanced
- Independent of direction of rotation
- Multiple springs rotating
- Liquid-lubricated
- Cartridge unit
Advantages
- Ready-to-fit and factory-tested unit
- With or without bearing available
- Patented hydrodynamic grooves
- Designed for high pressure range
- Connection dimensions to customers' requirements
- ATEX certification on request
Operating range
Shaft diameter:
d1 = 20 ... 500 mm (0.79" ... 19.69")
Pressure:
p1 = vacuum ... 250 bar (... 3,625 PSI)*,
p3 = p1 +10 %
Temperature:
t1 = -40 °C... +200 (350**) °C
(-40 °F ... +392 (662**) °F)
Sliding velocity:
vg = 0 ... 5 m/s (0 ... 16 ft/s)
* Depending on size, from 100 ... 150 bar (1,450 ... 2,175 PSI) executed as tandem seal (pressure reduction in 2 stages).
** with cooling flange
! It should be noted that the extremal values of each operating parameter cannot be applied at the same time because of their interaction.
Materials
Seal faces: Carbon graphite
Seats: Silicon carbide, FDA conform
Secondary seals and metallic parts acc. to application and customers' requirement.
Standards and approvals
- FDA
Recommended applications
- Refining technology
- Petrochemical industry
- Chemical industry
- Pharmaceutical industry
- Reactors
- Agitators
- Special rotating equipment with top entry drive
Notes
Options:
- Cooling resp. heating flange
- Leakage drain
- Flush
- Polymerization barrier
Recommended piping plans
Open circuit
e.g. EagleBurgmann SPA, EagleBurgmann SPN
Product links:
EagleBurgmann SPA
EagleBurgmann SPN manual
EagleBurgmann SPN automatic
Product variants
HSH(V)-D
Double seal
HSH(V)L-D
Double seal with integrated floating bearing (axial thrust bearing on request).
These seals are designed to be self-closing on the product side, i.e. they will remain closed even with pressure variations or a pressure reversal.
