It can replace Burgmann H75VA4
Features
- API 682 Category 2 and 3, Type A, Arrangement 1 seal
- Single seal
- Balanced
- Cartridge unit
- Bi-directional design
- Rotating multiple springs
- Integrated pumping device available
- Replaces the H75VN seal
Advantages
- Compact design
- Universally applicable both for retrofits or original equipment
- Efficient stock-keeping due to standardized components
- Extended selection of materials
- Extended field of operation in terms of temperature and pressure
- 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 = -40 °C … +176 °C (-40 °F … +349 °F)*
Sliding velocity: vg = 23 m/s (75 ft/s)
Axial movement:
d <50 mm ±1,0 mm
d ≥50 mm ±1,5 mm
* Engineered up to 260 °C (500 °F) with FFKM (K) secondary seals.
Materials
Seal ring: Blister resistant carbon,
Silicon carbide SSiC (Q1), RBSiC (Q2)
Mating ring:
Silicon carbide SSiC (Q1), RBSiC (Q2)
Secondary seals:
EPDM (E), NBR (P), FKM (V), FFKM (K)
Springs: Hastelloy® C-276 (M5)
Metal parts: CrNiMo steel 316 (G) or equivalent, optional materials on request.