Project Description
- Seals can be operated with pressurized
buffer fluid or with quench - O-rings are dynamically loaded to
prevent shaft damage - Easy and trouble-free installation
- Due to large radial clearance, the
damage to the seal faces are avoided,
in addition to the seal faces being
protected by strong steel parts - Misalignment during installation and
operations is reduced due to the static
springs on both the faces - Dual seal can also be used as a single
seal by removing the atmospheric seal
parts
- Pulp and paper industry
- Chemical industry
- Clean, abrasive or corrosive liquids
- Stocks of various kind
- Applications where crystallization is a problem
- Ahlstar UP A MS21 range of pumps
- Sulzer A, APP/APT pumps
- Sulzer SL mixers
- Metso conical refiners
- Stock pumps
- Seal face: Silicon carbide (Q12), Carbon (A)
- Secondary seals: FKM (V), EPDM (E),
FFKM (K) - Metal parts: CrNiMo steel (G),
Grade 5A (4T), SMO 654 (4U)
- Temperature: t = -20 °C … +140 °C (-4 °F … +284 °F)
(180 °C (356 °F) with FFKM elastomers) - Pressure: p1 … 25 bar (363 PSI), p3
- Speed= 20 m/s(66ft/s)
- Non-flow operation: Temperature: t = +5 °C … +100 °C
(+41 °F … +212 °F) - Pressure: p1 max. 10 bar (145 PSI), p3 > p1
- Sliding velocity: vg … 20m/s (66 ft/s)
- Dual seal configuration
- Balanced design
- Independent of direction of rotation
- Semi-Cartridge construction
- Double pressure balanced design
- Designed with provision for internal
barrier fluid circulation - No dynamic O-Ring on the shaft
- Robust construction with shrink-fitted
seal faces - Seal faces have a large clearance to
the shaft - Static springs on both the sides