LP-D

Features Integrated seal for Sulzer A pumps Dual seal, balanced Semi cartridge unit Independent of direction of rotation Double pressure balanced Internal barrier fluid circulation Static springs on both sides 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 Optimized design for Non-Flow use Advantages Individually integrated to equipment for the best sealing result Straightforward and easy installation Static springs on both face sides reduces influence of misalignment No damage of the shaft by dynamically loaded O-Rings 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 Operating range Temperature: t = -20 °C ... +140 °C (-4 °F ... +284 °F) (180 °C (356 °F) with Kalrez® elastomers) Pressure: p1 ... 25 bar (363 PSI), p3 <12 bar (174 PSI) Sliding velocity: vg ... 20 m/s (66 ft/s) Stock content: <8 % 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 <10 m/s (33 ft/s) 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 Pulp and paper industry Chemical industry CCUS Lithium Alternative fuels production Clean, abrasive or corrosive liquids Stocks of various kind Applications where crystallization is a problem Sulzer Ahlstar A (MS11) centrifugal pumps Notes Double, quench and single seals have the same wear parts on the prouduct side, reduces stock holding costs The dual seal can also be used as single seal by removing the atmospheric seal parts Can be used with pressurized buffer fluid or with quench