

Features mechanical seal hsh(l)u-d
- For bottom entry drives
- Double seal
- Balanced
- Independent of direction of rotation
- Multiple springs rotating
- Liquid-lubricated
- Cartridge unit
Advantages mechanical seal hsh(l)u-d
- Ready-to-fit and factory-tested unit
- With or without bearing available
- Patented hydrodynamic grooves
- High pressure seal for customer-specific solutions
Floating throttle on product side for protection of the seal or for flush - Connection dimensions to customers’ requirements
- Self-closing on product side
- ATEX certification on request

Operating range mechanical seal hsh(l)u-d
- Shaft diameter:
d1 = … 500 mm ( … 19.69″) - Pressure: p1 = vacuum … 60 bar (870 PSI)
- Temperature:
t1 = -40 °C … +200 °C (-40 °F … +392 °F) - Sliding velocity:
vg = 0 … 5 m/s (0 … 16 ft/s)
For applications beyond this range, please inquire.
Materials mechanical seal hsh(l)u-d
- Seal faces: Carbon graphite
- Seats: Silicon carbide, FDA conform
- Secondary seals and metallic parts acc. to application and customers’ requirement
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 |
30 | Throttle ring |
Recommended applications seal hsh(l)u-d Burgmann
- Refining technology
- Petrochemical industry
- Chemical industry
- Pharmaceutical industry
- Agitators
- Reactors
- Dryers
- Mixers
- Filters
- Special rotating equipment with bottom entry drive