Product Description

At InSealing, our ceramic-to-metal hermetic solutions, including our premium ceramic vacuum feedthroughs, are engineered using top-tier, high-purity alumina ceramics paired with precision-crafted metal conductors. Utilizing an advanced high-temperature vacuum brazing technique, we ensure a robust, ultra-tight hermetic seal designed to last.

Built specifically for high vacuum (HV), ultra-high vacuum (UHV), and other demanding environments, our feedthroughs offer exceptional stability. They reliably withstand severe thermal cycling, intensive mechanical stress, and prolonged bake-out periods. These components are essential for seamless power delivery, signal transmission, and sensor integration within sealed vacuum systems.

InSealing’s products are trusted across state-of-the-art scientific and industrial applications, including mass spectrometers, electron microscopes, X-ray/CT tubes, particle accelerators, vacuum metallurgy, semiconductor deposition systems, and aerospace simulation chambers.

Material Composition & Structural Design

• Dielectric Insulator: Manufactured from high-purity alumina, offering superior electrical isolation, outstanding heat resistance, and inert chemical properties.
• Conductor Pins/Rods: Available in Kovar, stainless steel, molybdenum, or nickel alloys. We carefully select these metals to perfectly match the coefficient of thermal expansion (CTE) of the ceramic.
• Hermetic Seal Technology: Eutectic vacuum brazing creates a permanent, void-free, and leak-proof metal-to-ceramic bond.
• Design Configurations: Offered in standard layouts (1 to 4 pins), with highly custom pin configurations available. Mounting styles include flange-mounted and axial inline structures.

Core Benefits

• Ultra-Reliable Hermeticity: Uncompromising vacuum integrity for critical operations.
• Thermal Shock Resistance: Engineered to endure extreme temperatures and rapid thermal changes.
• Superior Dielectric Strength: Ensures safe and uninterrupted electrical isolation.
• Built for Longevity: Proven durability that significantly reduces maintenance and system downtime.
• Tailor-Made Solutions: Fully customizable to meet your unique dimensional and electrical requirements.

Primary Applications

• High-temperature vacuum furnaces and thermal processing systems
• Plasma generation and thin-film vacuum coating equipment
• Advanced semiconductor manufacturing and laboratory research tools
• Electro-vacuum devices and sophisticated UHV sensors

Technical Specifications