Material Combinations (Optional)
Seal Faces:
Carbon Graphite / Silicon Carbide (SiC)
Silicon Carbide (SiC) / Silicon Carbide (SiC)
Tungsten Carbide (TC) / Tungsten Carbide (TC)
Secondary Seals (O‑rings):
NBR, EPDM, FKM (Viton), PTFE, FFKM
Metal Components: 304, 316L Stainless Steel, Duplex Steel, Alloy 20
MOR M481KL is a single‑end, balanced, stationary multi‑spring cartridge mechanical seal, specifically designed for heavy‑duty process pumps handling corrosive, abrasive, and high‑temperature fluids. It is widely recognized as a reliable replacement for equivalent API 682 Category 1 seals in refineries, chemical plants, and power generation facilities, offering robust performance and extended service life in demanding operating conditions.
Features
Stationary Multi‑Spring Structure
Springs are isolated from the process medium, preventing clogging and corrosion in slurry or particle‑laden fluids. This design ensures consistent spring force and stable sealing performance.
Balanced Seal Face Geometry
Reduces face loading to minimize friction and heat generation, enabling reliable operation at higher pressures and shaft speeds compared to unbalanced seals.
Cartridge Integrated Design
Pre‑assembled and pre‑set spring compression, eliminating on‑site measurement and adjustment. This drastically reduces installation errors and downtime, ensuring quick and error‑free mounting.
Robust Drive System
Features a positive drive collar with set screws, ensuring reliable torque transmission regardless of shaft rotation direction (clockwise or counterclockwise).
Flush & Quench Ports
Equipped with dedicated ports to support API flush plans (e.g., Plan 11, 23, 32), facilitating cooling, cleaning, and the removal of abrasive particles from the seal chamber.
Advantages
Anti‑Clogging Performance: Isolated springs resist blockage in abrasive slurry services.
Error‑Free Installation: Cartridge design eliminates complex setup and human error.
High Corrosion Resistance: Wide material selection adapts to aggressive chemical environments.
Long Service Life: Balanced face and robust construction minimize wear and maintenance frequency.
Interchangeability: Direct replacement for API 682 Category 1 seals and equivalent models from major OEMs.
Applications
Petrochemical & Refining: Crude oil, hot hydrocarbons, and catalytic processes
Chemical Processing: Acids, alkalis, solvents, and other corrosive fluids
Power Generation: Boiler feed water, flue gas desulfurization (FGD), and circulating water systems
Mining & Minerals: Slurries, ore processing, and tailings disposal
Pulp & Paper: Black liquor, white liquor, and stock pumps
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