Semi-Cartridge
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Genuine Sealmatic Certified Component
Sealmatic Mechanical SealsModel: PP - S
PP - S
Balanced single mechanical seal in semi-cartridge construction. Engineered with no dynamic O-ring on the shaft to completely avoid shaft fretting and wear, providing exceptional service life in process pumps and refiners.
Pressure RangeUp to 25 bar (363 PSI)
Temperature-20 °C to +140 °C
Sliding Velocity20 m/s (66 ft/s)
Product Description
Single seal configuration
Balanced design
Independent of direction of rotation
Semi-Cartridge construction
No dynamic O-Ring on the shaft
Technical Features
1
O-rings are dynamically loaded to prevent shaft damage
2
Easy and trouble-free installation
3
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
4
Misalignment during installation and operations is reduced due to the static springs
Details
Component Index & Parts Breakdown| Item No. | Description |
|---|---|
| 1, 5 | Seal face |
| 2, 12, 22, 23, 24 | O-Ring |
| 3 | Spring |
| 13 | Sleeve |
| 16 | Housing |
| 18 | Pin |
| 37 | Assembly fixture |
Performance Capabilities
Temperature Range
t = -20 °C ... +140 °C (-4°F ... +284 °F)
Operating Pressure
p1 ... 25 bar (363 PSI)
Sliding Velocity
vg ... 20 m/s (66 ft/s)
Operational Note: Parameters depend on media lubricity and operational duty. Consult GeoMatics technical engineering for sizing verification.
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)
Certified metallurgy: Grade 5A (4T), SMO 654 (4U) and CrNiMo steel ensuring maximum chemical resistance.
Suitable For Equipment
Direct replacement and retrofit compatibilityAhlstar UP A MS21 range of pumps
Sulzer A, APP/APT pumps
Sulzer SL mixers
Metso conical refiners
Stock pumps
Typical Industrial Applications
Recommended operating sectorsPulp and paper industry
Chemical industry
All clean none abrasive media