A | Primary seal gas supply |
B | Primary vent |
C | Secondary gas seal supply |
S | Secondary vent |
D | Separation gas supply |
Item | Description |
1 | Seal face, stationary |
2 | Seat, rotating |
3 | Thrust ring |
4 | Spring |
5 | Shaft sleeve and seat retainer |
6 | Intermediate sleeve |
7, 8 | Housing (size matched to installation space) |
9 | Separation seal (CSR) |
10 | Labyrinth |
11 | Intermediate labyrinth |
Seal DGS Features (HBGS)
- Gas-lubricated
- Uni-directional or bi-directional
- Ready-to-fit cartridge unit
- Single, double, tandem and tandem with intermediate labyrinth available
- Separation seals as labyrinths, carbon rings or CobaSeal are optionally available
Seal DGS Material
Seal face: Silicon carbide with DLC coating, Carbon graphite
Seat: Silicon carbide with DLC coating
Secondary seals: FKM
Metal parts: 1.4006 or other stainless steels
Other materials on request.
Available also with EagleBurgmann DiamondFace technology.
Seal HBGS Advantages
- Wear-free and contact-free operation
- Self-cleaning 3D gas grooves
- High gas film stiffness
- Secure cupped retainer for seat
- Available in various materials for optimized chemical resistance
- Proven, reliable and economical solution
Seal DGS Recommended applications
Oil and gas industry
Refining technology
Petrochemical industry
Hydrocarbon gas
Ammonia
Nitrogen
Air
Centrifugal compressors
Turbo expanders
Blowers