Material Combinations (Optional)
Seal face: Carbon/SiC, SiC/SiC, Tungsten Carbide/SiC, SSIC
Elastomers: FKM, EPDM, AFLAS, FFKM, NBR
Springs: SUS316L/AM350/Inconel718/Alloy 276
Metal Parts: SS316, Alloy 276, Duplex Stainless Steel
MOR CDPN is a dual (double), pressurized, hydraulically balanced, pre‑assembled cartridge mechanical seal, engineered for zero‑emission, high‑safety sealing in demanding process pump applications. Designed as a modular, high‑performance solution, it operates with a pressurized barrier fluid (0.1–0.3 MPa above process pressure) to fully contain hazardous, toxic, corrosive, or abrasive fluids. It is widely used as a direct retrofit for ANSI/DIN centrifugal pumps, slurry pumps, and process equipment requiring maximum containment.
Features
Dual Pressurized Cartridge Design: Pre‑assembled, factory‑set unit for error‑free installation; no shaft disassembly or complex adjustments needed.
Hydraulically Balanced Seal Faces: Reduces heat generation, power consumption, and face wear; stable operation under pressure fluctuations.
Independent Dual Seal Faces: Two separate sealing elements ensure process fluid containment even if one seal fails.
Isolated Multi‑Spring System: Alloy 276 helical springs are positioned away from process media to prevent clogging, corrosion, and fatigue; delivers uniform face loading.
Non‑Shaft‑Fretting Sleeve Elastomer: Eliminates shaft scoring and wear; positive set‑screw drive for reliable torque transmission.
Standard Quench, Flush & Drain Ports: Integrated ports for API sealing plans (Plan 53A/B/C, 54, 62) to support barrier fluid circulation, cooling, and contamination control.
Bi‑Directional Rotation: Operates efficiently regardless of shaft turning direction.
Shaft Protection Sleeve: Integrated sleeve safeguards the pump shaft from wear and damage.
Compact ANSI‑Compatible Gland: Fits standard pump seal chambers without modification.
Advantages
Near‑Zero Emissions: Pressurized barrier fluid creates a positive pressure shield, preventing process fluid leakage to the atmosphere.
Enhanced Safety: Dual independent seals provide redundant containment for hazardous/toxic fluids.
Long Service Life: Balanced design and isolated springs reduce wear; barrier fluid lubricates faces and prevents contamination.
Easy Installation & Maintenance: Cartridge design cuts downtime by 60–70% vs. component seals; no seal chamber modification required.
Versatility: Compatible with most centrifugal, slurry, and process pumps; ideal for retrofits.
Condition Monitoring: Barrier fluid pressure/level changes provide early failure detection.
ATEX Compliance: Safe for use in explosive hazardous environments
Applications
Chemical & petrochemical process pumps (toxic/corrosive fluids).
Refinery, oil & gas, and pharmaceutical pumps.
Pulp & paper, mining slurry, and FGD pumps.
Power generation (thermal fluid, boiler feedwater).
Food & beverage, wastewater, and hazardous waste pumps.
ANSI/DIN centrifugal pumps requiring zero‑emission sealing.
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