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.