N-Seal Nuclear Primary Pump Seal
N-Seal Nuclear Primary Pump Seal
| Brand: | Flowserve |
|---|---|
| Description: |
The N-Seal is Flowserve’s premier nuclear-qualified primary pump seal developed specifically for use in nuclear reactor coolant pumps (RCPs) and other primary loop applications. Designed for Class 1 nuclear service, the N-Seal is engineered to withstand high temperatures pressures radiation and extended run times without compromising seal integrity or safety. Tested and qualified to ASME Section III and RCC-E standards, the N-Seal features redundant sealing elements advanced materials and hydrodynamic lift-off face designs that ensure reliable operation during both normal and transient plant conditions. It supports reactor startup shutdown and emergency cooling events while delivering leak-tight performance throughout long fuel cycles. With decades of proven field use in pressurized water reactors worldwide the N-Seal plays a critical role in helping operators maintain nuclear safety compliance and long-term equipment availability. |
The result of years of research, thousands of hours of rigorous testing and decades of primary pump application experience, the Flowserve N-Seal primary pump seal represents the nuclear industry’s most advanced mechanical seal technology. With each of three stages capable of sustaining 100% system pressure, the N-Seal has successfully provided proven service life and fail-safe redundancy in Flowserve Byron Jackson® primary coolant pumps for years.
N-Seal Nuclear Primary Pump Seal Applications
Nuclear Service
- Industries:
Power Generation
N-Seal Interactive Animation
This self-paced, interactive tool features a highly detailed 3-D model of the N-Seal primary pump seal. Users will learn about the anatomy of the seal, its important design features, and its many safety and reliability benefits.
Unique Cartridge Construction simplifies installation, enables more accurate seal setting, and keeps associated costs low.
Triple Redundant Seal Design mirrors existing seal system parameters. Each of the three stages can handle 100% of the system pressure.
Hydrodynamic Seal Face Technology outperforms hydrostatic designs with dramatically improved reliability and running periods.
Three different seal face lift designs are available to ensure non-contacting faces over a broad operating range.
Pressure is Automatically Redistributed to the remaining two stages in the event of a stage failure, allowing the plant to complete the fuel cycle.
Interchangeability of Stage Components enables spare parts inventories and carrying costs to be reduced.
Large Axial Travel Capability maximizes operating life; sealing integrity maintained through all plant transient scenarios.
Working on a PWR system or primary loop application? Speak with our engineering team to validate seal compatibility and compliance