Features mechanical seal cobaDGS
The sealing solution for reduction of methane-/ process gas emissions
- Gas-lubricated
- Bi-directional
- Ready-to-fit cartridge unit
- Available for following seal arrangements: single and tandem
- Co-axial primary seal
- Separation seals as CobaSeal, carbon rings or labyrinths optional
Advantages mechanical seal cobaDGS
- No methane-/ process gas emissions
- Supplied with clean nitrogen (no dew point and dirt problems)
- Robust
- Offers higher safety than a double seal
- Upgrade-possibility of existing single, double and tandem seals
- No modification of the compressor necessary
- Efficient alternative to hermetically sealed systems
- For compressors with gas- and steam turbines, as well as with electric drive
Operating range mechanical seal cobaDGS
- Shaft diameter:
d = 25 … 350 mm (0.99“… 13.78“) - Pressure:
p = from vacuum up to 160 bar (2,321 PSI) - Design temperature:
t = -46 °C … +230 °C
(-51 °F … +446 °F) - Sliding velocitiy:
vg = up to 140 m/s (459 ft/s)
Materials mechanical seal cobaDGS
- Stationary seal face: Silicon carbide with DLC-coating, DiamondFace-coating optional
- Rotating seal face (Seat): Silicon carbide with DLC-coating, DiamondFace-coating optional
- Secondary seals: FKM or other elastomers, depending on product gas composition
- Metal parts: 1.4006 or other stainless steels
Other materials on request.
Dimensions on request
| Item | Description |
| 1 | (Seat) Rotating seal face |
| 2 | (Seal face) Stationary seal face |
| 3 | Thrust ring |
| 4 | Spring |
| 5 | Shaft sleeve |
| 6 | Housing |
| 7 | Labyrinth |
| 8 | DGS as seal on atmoshere side |
| 9 | CobaSeal as separation seal |
Recommended applications seal cobaDGS Burgmann
- Pipelines
- Gas storages
- Oil and gas industry
- Chemical industry
- Power plants
- Centrifugal compressors
- Turbo expander
- Turbines
- Pumps
- Blower
