Click image to enlarge
| Item | Description |
|---|---|
| 1, 5 | Seal face |
| 2, 12, 22, 23, 24 | O-Ring |
| 3 | Spring |
| 13 | Sleeve |
| 16 | Housing |
| 18 | Pin |
| 37 | Locking fixture |
LP-S-UP Single seal
Ready-fitted for Ahlstar UP A MS21 range of pumps, bearing unit A1-A6
LP-S
Features
- Integrated seal for Sulzer A pumps
- Single + Plan 11 flush
- Semi cartridge unit
- Balanced
- Independent of direction of rotation
- Static springs
- No dynamic O-Ring on shaft
- Rugged design
- Shrink-fitted seal faces
- Seal faces have a large clearance to the shaft
- Wear part cost minimized
Advantages
- Individually integrated to equipment for best sealing result
- Straightforward and easy installation
- Static springs reduces influence of misalignment
- No damage of the shaft by dynamically loaded O-Ring
- Extended service life due to rugged design
- No brittle parts in contact with torque transmission pins
- Seal faces protected by strong steel parts and a large radial clearance
- The double, quench and single seals have the same wear parts on product side
- Reduces stock holding costs
Operating range
Temperature:
t = -20 °C ... +140 °C (-4 °F ... +284 °F)
Pressure: p1 ... 25 bar (363 PSI)
Sliding velocity: vg ... 20 m/s (66 ft/s)
Stock content: ... 4 %
Materials
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)
Recommended applications
- All clean none abrasive media
- Pulp and paper industry
- Chemical industry
- CCUS
- Sulzer Ahlstar APP and APT centrifugal pumps
Product variants
LP-S-UPF
Single seals for API Plan 11 with throttle acc. Sulzer design request, adapted for Sulzer A pump series.
LP-G-UP
Single seal for operation with unpressurised grease quench. Identically equal design to LP-S-UP however with quench housing at atmospheric side.
LP-S-S32-E10
Single seal adapted for Sulzer APP/APT Pumps.
LP-S-S32-F10
Single seal adapted for Sulzer APP/APT Pumps, for API Plan 11 with throttle acc. Sulzer design request.
LP-Q-S32-E20
Single seal for operation with unpressurised quench. Identical design with LP-S however with outboard lip seal at atmospheric side (installation length longer), adapted for Sulzer APP/APT Pumps.
LP-G-S32-E30
Single seal for operation with unpressurised grease quench. Identically equal design to LP-S-S32 however with quench housing at atmospheric side.
LP-S-SL
Single seal, adapted for Sulzer SL Mixers.
Further designs
available to fit in numerous other equipment from notable manufacturers for the Pulp- and Paper Industry e.g., Metso conical refiners, Andritz pressure screens and stock pumps.
