Nuclear Spiral Wound Gasket

Primary Use Cases

Primary Coolant Loops: Sealing critical connections in the reactor pressure vessel (RPV) and primary piping.
Steam Generators: High-integrity sealing for tube sheet manways and inspection ports.
Containment Cooling Systems: Ensuring leak-free performance in safety-related cooling infrastructure.
Radioactive Waste Processing: Long-term sealing for storage canisters and processing equipment.
Nuclear Propulsion: Specialized sealing solutions for marine nuclear reactors and research facilities.

FAQs

What specifically makes a gasket “Nuclear Grade” at Kriloha?

It refers to the ultra-high purity of the materials. We strictly limit leachable chlorides and sulfur to microscopic levels to prevent the chemical degradation of expensive reactor-grade alloys.

Can these gaskets withstand high-dose radiation exposure?

Yes. Unlike elastomeric seals that embrittle under radiation, the metallic windings and graphite fillers used by Kriloha are inherently stable and maintain their sealing properties throughout the fuel cycle.

Does Kriloha provide the necessary safety documentation?

Absolutely. Every shipment includes comprehensive documentation, including Certified Material Test Reports (CMTRs) and certificates of compliance with ASME Section III or NQA-1 standards.

Are inner rings required for Nuclear SWGs?

We highly recommend them. Inner rings act as an additional shield for the winding and prevent the filler from being exposed to high-velocity turbulent flow, which is common in primary cooling loops.

What is the shelf life of a Kriloha Nuclear Gasket?

Due to the inorganic nature of the stainless steel and nuclear graphite, these gaskets have an almost indefinite shelf life when stored in their original, moisture-barrier packaging.

At Kriloha Ltd., we understand that in the nuclear power industry, the margin for error is non-existent. Our Nuclear Spiral Wound Gaskets are not merely industrial components; they are safety-critical barriers engineered for the most demanding environments on Earth. As a premier supplier of high-performance gaskets, Kriloha Gaskets has developed a specialized manufacturing protocol to meet the zero-tolerance standards of global nuclear operators.

The core of our Nuclear SWG is the Kriloha-Pure™ Nuclear Grade Graphite. Standard industrial graphite often contains trace amounts of halides which, under the high-temperature and high-radiation conditions of a reactor, can lead to catastrophic stress corrosion cracking (SCC) of the stainless steel or Inconel flanges. Kriloha eliminates this risk by using graphite with ultra-low leachable impurities. This ensures that the chemical integrity of your primary loop is never compromised by the sealing element itself.

Structurally, these gaskets utilize high-grade 316L or 347 stainless steel windings. The 347 grade is particularly valued in nuclear applications for its stabilization against intergranular corrosion during long-term exposure to high temperatures. Our Advanced Tension Control (ATC) winding process ensures that the “V” profile of the metal strip maintains a consistent mechanical spring rate. This is vital because nuclear systems often undergo rapid thermal scrams; the gasket must be resilient enough to recover instantly as the hardware cools to prevent a “dry” leak path.

Furthermore, every Kriloha Nuclear Gasket is treated as a unique entity. We provide 100% traceability, providing our partners with the peace of mind that every alloy and filler batch has been verified for nuclear service. These gaskets are produced in dedicated “clean zones” to prevent cross-contamination from non-nuclear materials. In a sector where maintenance windows are strictly regulated and high-stakes, the reliability of a Kriloha seal minimizes the need for rework and reduces the “ALARA” (As Low As Reasonably Achievable) radiation exposure for your maintenance teams. When you specify Kriloha, you are choosing documented safety and undisputed engineering excellence.