High-Vacuum Feedthroughs for Critical Systems

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What Is a High-Vacuum Feedthrough?

High-vacuum feedthroughs are specialized hermetic components that allow electrical power or signals to pass through vacuum or pressure boundaries without leakage. In vacuum environments, even microscopic leaks can compromise system performance, contaminate sensitive processes, or cause equipment failure. High-vacuum feedthroughsare therefore essential in applications where stable pressure control and long-term reliability are required.

Hermeticity and Vacuum Integrity

Hermeticity refers to the condition of being completely air- or gas-tight. In vacuum systems, hermetic feedthroughs prevent gas migration through pressure barriers while maintaining electrical insulation and mechanical stability. These components are commonly validated using helium leak detection to ensure ultra-low leak rates suitable for high-vacuum and ultra-high-vacuum environments.

Glass-to-Metal and Ceramic-to-Metal Feedthroughs

Complete Hermetics designs and manufactures both glass-to-metal feedthroughs and ceramic-to-metal feedthroughs for high-vacuum applications. Glass-to-metal feedthroughs provide excellent electrical insulation and cost efficiency, while ceramic-to-metal feedthroughs are preferred for higher temperatures, higher voltages, and harsher operating conditions. Material selection is based on vacuum compatibility, thermal expansion matching, and electrical performance requirements.

Precision Engineering and Testing

High-vacuum feedthroughs must be manufactured with extremely tight tolerances to maintain vacuum stability over extended operating periods. Materials such as stainless steel, Kovar, titanium, and high-purity ceramics are selected for low outgassing and corrosion resistance. Rigorous inspection and testing ensure consistent electrical performance and long-term hermetic integrity.

Applications Across Industries

High-vacuum feedthroughs are widely used in semiconductor fabrication equipment, aerospace simulation chambers, medical imaging systems, research laboratories, and energy technologies where controlled environments are essential.

Engineering Expertise You Can Trust

Complete Hermetics manufactures high-vacuum feedthroughs, glass-to-metal feedthroughs,  ceramic-to-metal feedthroughs, hermetic connectors, and hermetically sealed packages engineered for extreme environments. In addition to vacuum solutions, the company provides battery end seals, hermetic headers, and power packages for aerospace, defense, medical, and industrial applications. From prototype development to production, Complete Hermetics delivers precision hermetic solutions with proven reliability.