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AS-LP-D: Burgmann LP-D replacement

Description:
AS-LP-D: Replacement of Burgmann LP-D mechanical seal, Dual cartridge seal

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Structure discription:
Equivalent to Burgmann LP-D
Integrated seal for Sulzer A pumps
Dual seal
Semi cartridge unit
Balanced
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
Operating limits:
Temperature: t = -20 °C ... +140 °C (-4 °F ... +284 °F)
(180 °C (356 °F) with Kalrez® elastomers)
Pressure: p1 ... 25 bar (363 PSI), p3 Sliding velocity: vg ... 20 m/s (66 ft/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
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)
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;
The 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

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