NuSource LLC
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NuSource is proud to introduce our exclusive partnership with Flexaseal Engineered Seals and Systems to provide the ShellCool water-cooled heat exchanger system. This system is essential for nuclear power plants to meet temperature limitations for sealing elements that are critical to the efficiency and safety of the pumps and other vital parts.

​Our teams collaborate closely to ensure that all design and build requirements are met, guaranteeing that the system is optimized for optimal performance and reliability. This partnership represents a significant step forward for NuSource and Flexaseal Engineered Seals and Systems in the nuclear power industry, and we look forward to working together to provide cutting-edge solutions for our clients.
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​Introducing the ShellCool Heat Exchanger

​The ultimate solution for process and barrier fluids in seal applications, our top-of-the-line system is designed to work seamlessly with API 682 conforming Flush Plans 21, 22, 23, 41, 53B, 53C, 54, and 55.

With the ShellCool Heat Exchanger, you can rest assured that your critical mechanical seal components will be effectively cooled and lubricated, eliminating common failures caused by high process temperatures and friction. Our system is engineered for exceptional performance, ensuring that your equipment operates longer with fewer failures. 

Our heat exchanger requires minimal maintenance, saving you valuable time and money. By investing in ShellCool, you're making a smart choice to protect your plant and equipment. Choose ShellCool Heat Exchanger today and experience the benefits of reliable, long-lasting performance.
  • Removable Head and Bundle for Easy Maintenance​
  • Double wrap, tubing for increased cooling surface area
  • Internal Baffle for Enhanced ransfer
  • (3) Sizes Available up to 1” Coil
  • Heavy Duty Shell Design
  • ASME N Stamp Available
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Download the Brochure
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​NuSource LLC
320 King Street
​Alexandria, VA 22314
Corporate:  (571) 482-7404
[email protected]

© 2026 NuSource, LLC. All Rights Reserved
  • ABOUT
    • HISTORY & HIGHLIGHTS
    • CAREERS
  • CAPABILITIES
    • ENGINEERING
    • FABRICATION
    • FACILITIES
  • TEAMING AGREEMENTS
    • CARRIER
    • FLEXASEAL
    • NUCCORP
    • PALL
    • SWAGELOK
    • WATLOW
    • XYLEM / AM STANDARD
  • QA PROGRAM
  • NEWS