Material Combinations (Optional)
Seal Faces: Sintered Silicon Carbide (SiC/SiC) or Tungsten Carbide (TC/TC) for maximum abrasion and corrosion resistance
Secondary Seals: FKM (Viton), FFKM, EPDM, or PTFE for extreme chemical compatibility
Metal Components: 316L, duplex stainless steel (2205/2507), or Alloy C276 for high corrosion resistance
Springs: 316L or Hastelloy C276, isolated from process fluid to prevent fouling
MOR LP-D Dual Cartridge Mechanical Seal a cartridge-mounted, dual-face, back-to-back balanced mechanical seal, engineered to meet API 682 (Arrangement 3) standards for critical process pumps handling hazardous, toxic, flammable, or volatile fluids. It features a fully pre-assembled cartridge design for reliable, zero-leakage sealing in demanding refinery, petrochemical, and chemical applications.
Key Features
Cartridge Unitized Design: Pre-assembled and preset as a complete unit, eliminating on-site measurement and alignment errors, enabling quick installation and replacement without pump disassembly.
Dual-Face Back-to-Back Structure: Forms a sealed barrier chamber for pressurized barrier fluid, ensuring zero leakage of hazardous media to the atmosphere.
Hydraulically Balanced: Reduces seal face loading and heat generation, extending service life in medium-to-high pressure applications.
Isolated Springs & Dynamic Seals: Multi-springs and secondary seals are located outside the process fluid, preventing clogging and wear in abrasive or crystallizing services.
Integrated Shaft Sleeve: Protects the pump shaft from wear, corrosion, and high-speed abrasion.
Bidirectional Rotation: No need to distinguish rotation direction during installation.
API Plan Compatibility: Optimized for API Plans 53A, 53B, 53C, and 54 barrier fluid systems.
Applications
Refinery & Petrochemical: Crude oil, vacuum distillation, hydrocracking, and catalytic reforming pumps
Chemical Processing: Acids, alkalis, solvents, and toxic/volatile organic compounds (VOCs)
Pharmaceutical & Fine Chemicals: High-purity, sterile, and hazardous process fluids
Oil & Gas: Pipeline pumps, injection pumps, and production pumps
Power Generation: Boiler feed pumps and high-pressure circulating pumps
Advantages
Zero Leakage of Hazardous Media: Dual-face design and pressurized barrier fluid ensure compliance with strict environmental and safety regulations.
Long Service Life: Balanced design and high-grade materials reduce wear and extend maintenance intervals.
Low Maintenance: Cartridge design minimizes installation time and eliminates alignment errors, reducing downtime.
Superior Resistance to Fouling: Isolated springs and dynamic seals prevent clogging in abrasive, crystallizing, or particle-laden fluids.
High Compatibility: Direct replacement for international OEM seals and compatible with API 610 centrifugal pumps.
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