Click image to enlarge
| Item | Description |
|---|---|
| 1, 8 | Seal ring |
| 4, 11 | Spring |
| 5, 12 | Mating ring |
| 15 | Seal sleeve |
| 19 | Insert |
| 23 | Gland plate |
GBI Gas barrier IN
GBO Gas barrier OUT
HRGS-DD
Features
- API 682 Category 2 and 3, Type A, Arrangement 3 seal
- Dual seal in face-to-back arrangement
- Gas-lubricated
- Balanced
- Cartridge unit
- Independent of direction of rotation
- Stationary springs
- Contact free operation, no friction
Advantages
- Universally applicable both for retrofits or original equipment
- Efficient stock keeping due to standardized components
- Extended selection of materials
- Metal parts also in special materials available
Operating range
Shaft diameter:
d1 = 20 … 110 mm (0.79" … 4.33")*
Pressure: p1 = 42 bar (609 PSI)
Temperature:
t = -20 °C … +176 °C (-4 °F … +350 °F)
Sliding velocity:
vg = 4 … 23 m/s (13 ... 76 ft/s)
Axial movement: ±1.0 mm
Materials
Seal ring (product side):
Silicon carbide Q19, SSiC (Q1)
Seal ring (atmospheric side):
Blister resistant carbon,
Silicon carbide SSiC (Q1), Q19
Mating rings:
Silicon carbide SSiC (Q1), RBSiC (Q2)
Secondary seals:
EPDM (E), NBR (P), FKM (V), FFKM (K)
Springs: Hastelloy® C-4 (M)* and C-276 (M5)
Metal parts: CrNiMo steel 316 (G) or equivalent,
optional materials on request.
* EagleBurgmann standard
Standards and approvals
- API 682 / ISO 21049
- API 682 4th ed. Cat. 2/3 - 3NC-FB
Recommended applications
- Gases and liquids
- Media which require high purity
- Environmental harmful media
- Refining technology
- Petrochemical industry
- Oil and gas industry
- API 610 / ISO 13709 pumps
- Process pumps
Recommended piping plans
Process side:
API Plan 01
API Plan 02
API Plan 03
API Plan 11
API Plan 12
API Plan 21
API Plan 22
API Plan 31
API Plan 32
API Plan 41
Between seals:
API Plan 74
