The desire to move to sustainable energy sources and reduce carbon emissions is growing exponentially. Low-cost renewable energy sources (e.g., solar, wind, hydro) are being developed and deployed worldwide.
As the world shifts its focus to decarbonization initiatives, research shows responsible leaders will pour more technology and infrastructure into the hydrogen production economy to provide clean, carbon-free energy storage.
Non-Contacting Sealing Technology Reduces Wear, Heat, Increases Life Expectancy
Design features in the face of the mating ring force fluid (air, gas) into a converging gap in the sealing face. As the pressure builds, the faces separate.
The HELICOFLEX® seal is a high performance, flexible metal seal that has exceptional compression and elastic recovery properties. This seal is composed of a close wound helical spring surrounded by one or more metal jackets. The spring is designed to have a specific compression resistance. During compression, the resulting specific pressure forces the jacket to yield and fill the flange imperfections while ensuring positive contact with the flange sealing faces. Each coil of the helical spring acts independently and allows the seal to conform to surface irregularities on the flange surface.
HELICOFLEX® design flexibility allows Technetics engineers to customize the seal characteristics to match each unique application.
| Temperature | Pressure | Leak rate | Sealing Lining | Coating | Spring |
|---|---|---|---|---|---|
| from -272˚ up to 800˚C (from -457˚F to 1472˚F) | from 10-10 mbar up to 3000 bar (from 1E-12 psi to 43.511 psi) | Sealing level from bubble tightness down to 10-12 Pa.m3.s-1 | Aluminum Gold Silver Pure Iron Copper Brass Soft Steel Nickel Monel Tantalum Stainless Steel (304L – 316L – 321 – 316Ti) Zirconium Inconel (600 – 625 – 718 – 750) Hastelloy Titanium Tin | Gold Silver Nickel | Nimonic 90 Alloy 718 Alloy 750 SS – XC80 |
Increase the overall sealing performance of your installations with TEXEAL®, the new patented texturing process, applied to HELICOFLEX®, which is already the resilient metal seal standard for high-performance sealing. HELICOFLEX® TEXEAL® can help reduce operating costs during maintenance. It is a material innovation developed from decades of established sealing expertise.
• Optimize overall cost of assembly during design phase
• Reduce overall operating cost
• MTBF (mean time before failure) increase
• LCC (life cycle cost) decrease
• Optimize sealing performance without increasing of the
tightening force (up to 10-12 Pa.m3.s-1)
• Lower stress on the assembly with the same tightness level
• Maintain sealing performance during thermal cycles
• Adaptable to a wide range of assembly dimensions
• Adaptable to groove sealing surfaces
• Large selection of materials
• Corrosion resistant
• Nuclear Power Generation: reactor pressure vessels closure head, control rod mechanisms (CRDM), reactor coolant pumps (RCP), pressurizers, steam generators, spent fuel casks
• New energies: molten salt & solar plants, SMR
• Semiconductors: chamber, exhaust and other applications in PVD/CVD/etch and lithography processes
• Valves: body/bonnet sealing, seat sealing
The ORIGRAF® seal provides a lasting high-performance sealing solution for all industries. It can be specifically designed for extreme thermal & pressure cycles ensuring higher safety in operation while optimizing total cost of ownership.
Unlike flexible graphite cut gaskets, the compression of the ORIGRAF® die-formed seal is limited by a mechanical stop: groove or inner and/or outer ring. In the case of assemblies subject to extreme pressure and/or temperature this design prevents excessive seating stress on the seal during transients.
This reliable and sustainable solution allows the optimization of overall operating costs, increasing the Mean Time Between Failure (MTBF).
ORIGRAF® seals are mainly used in applications servicing the following industries:
The range of applications can be extensive, including:
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