Advanced Ceramic-to-Metal Seals and Feedthroughs for High-Temperature Performance

Why Ceramic-to-Metal Seals Are Superior

Ceramic-to-metal seals provide unmatched insulation strength, temperature resistance, and structural durability—making them ideal for systems exposed to extreme conditions. Unlike glass seals, ceramics retain mechanical and electrical stability at temperatures exceeding 500°C and remain intact during rapid thermal cycling. These properties make CTM seals indispensable in aerospace propulsion, medical imaging equipment, semiconductor fabrication tools, and scientific instrumentation.

Material Properties & Bonding Precision

Complete Hermetics uses high-purity alumina ceramics, metalized with tungsten-molybdenum or moly-manganese layers, to enable strong brazed joints with Kovar, titanium, or stainless steel housings. This combination allows ceramic-to-metal seals to achieve extremely low leak rates and high dielectric breakdown voltage. Optional plating—gold, nickel, or silver—improves conductivity, corrosion resistance, and long-term material stability.

Applications Across High-Temperature Industries

Ceramic-to-metal seals are essential in:

  • High-voltage power systems
  • Vacuum and plasma processing equipment
  • RF amplifiers and radar transmitters
  • Aerospace ignition and propulsion assemblies
  • Nuclear diagnostic sensors
  • Industrial heating and furnace control systems

Engineering Collaboration & Testing

Complete Hermetics works closely with engineers to determine ceramic thickness, dielectric spacing, pin configurations, and mounting styles tailored to each application. Every component undergoes helium leak detection, thermal shock testing, vacuum cycling, and electrical qualification to ensure longevity and reliability.

Contact Complete Hermetics

Count on Complete Hermetics for robust, precision-engineered ceramic-to-metal seals and feedthroughsyour trusted partner for extreme-environment reliability.