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Precision-engineered metal bellows, assemblies, and thermal actuators backed by 120 years of innovation and field-proven performance.
🎉 Celebrating 120 Years of Innovation — Watch Our Anniversary Video
A legacy of innovation, precision, and reliability in metal bellows technology since 1904.
In 1904, Weston Fulton, a visionary meteorologist from the University of Tennessee, introduced the groundbreaking thermodynamic innovation known as the “sylphon,” drawing inspiration from the Norse goddess of weather. This invention marked a pivotal moment in industrial history, catalyzing sweeping changes across various sectors.
The sylphon played a crucial role in advancements made by the Allied forces during World War I and II. Its impact was so profound that the U.S. Patent Office established a dedicated section for sylphon-related spin-offs.
Over the decades, the company evolved through key milestones: acquisition by Reynolds Metals in 1928, independence in 2000, merger with Cliflex Bellows in 2014, and integration into Smiths’ Flex-Tek group in 2019 — all while maintaining its legacy of excellence.
To provide world-class thin-walled metal formed products that enhance people’s lives.
To become the world’s first choice for precision metal bellows.
Integrity, Respect, Collaboration, Creativity, and Passion for Success.
Engineered for performance, durability, and precision across critical industrial applications.
Custom hydroformed and mechanically formed metal bellows designed for high-cycle life and extreme environments.
Complete assemblies with end fittings, supports, and integration-ready designs for valves, sensors, and actuators.
Thin-walled, seamless metal tubing manufactured to exacting tolerances for sensitive instrumentation.
Compact, rugged, and dependable thermal power sources for fail-safe operation in limited-space applications.
Tailored designs for unique applications, supported by life test data and field performance validation.
Engineered for extreme pressure environments with enhanced fatigue resistance and safety margins.
Fabricated from specialized alloys including Inconel, Hastelloy, and titanium for harsh chemical environments.
Ultra-compact designs for medical devices, aerospace systems, and precision instrumentation.
Over a century of bellows engineering expertise, advanced manufacturing, and rigorous quality assurance.
Fulton’s engineers represent the greatest cumulative bellows experience and knowledge in the industry. They work closely with you from concept through design, testing, manufacturing, and delivery.
With concentrated expertise in formed bellows, our team understands the advantages and limitations of every design — helping you prepare precise specifications efficiently.
Stainless steel, Inconel, Hastelloy, titanium, and other high-performance alloys for extreme environments.
Hydroforming, mechanical forming, laser welding, and precision machining with tight tolerances.
Life cycle testing, pressure testing, helium leak testing, and performance validation under real-world conditions.
Our hydrogen annealing furnace ensures optimal material properties, while our quality systems meet AS9100, ISO 9001, and other industry standards.
Learn About QualityOur bellows serve aerospace, defense, medical, energy, semiconductor, automotive, and industrial markets.
Yes. Our engineering team specializes in custom solutions, from concept to validation and production.
We use stainless steel, Inconel, Hastelloy, titanium, and other high-performance alloys.
Yes. We provide life test data and performance validation to ensure reliability in your application.
Our manufacturing facility is in Knoxville, Tennessee.
Reach out to discuss your bellows or thermal actuator needs with our engineering team.
865-546-0550
sales@fultonbellows.com
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