Ceramic-to-metal sealing products

Ceramic-to-metal sealing

No. Parameter Typical Value / Specification Unit
1 Alumina Purity 95%or 99%  %
2 Bulk Density 3.63 g/cm³
3 Thermal Conductivity (25°C) 22.45 W/m·K
4 Coefficient of Thermal Expansion (20–1000°C) 8.26 ×10⁻⁶/°C
5 Flexural Strength ≥340 MPa
6 Dielectric Strength ≥8.3 kV/mm
7 Dielectric Constant (1 MHz) 9.1 @1MHz
8 Dielectric Loss (1 MHz) ≤0.0004 @1MHz
9 Metallization Layer (Mo/Mn) 15–25 μm  μm
10 Plating Layer (Ni/Cu/Au etc.) 8–10 μm  μm

This product is currently out of stock and unavailable.

SKU1600902003518-1-2
Status99 in stock

Ceramic-to-metal sealing products

MEETCERA offer customers a wide variety of vacuum-tight, hermetically sealed ceramic-to-metal components. Ceramic-to-metal sealing products not only have the characteristics of ceramic high temperature resistance, corrosion resistance, but also have the strength and toughness of metal. They are widely used in electronic aerospace, medical industry and other applications.
The best customer service and effcient solution could be provided is MEETCERA commitment.

Ceramic-to-Metal Sealing Features:

  • High Abrasion Resistance
  • High Mechanical Strength
  • Pressures over 10,000 PSI
  • High Temperature Usage
  • Low Dielectric Loss
  • Mass Spectrometer Leak Tested
  • High Chemical Stability

Ceramic-to-Metal Sealing Applications:

  • Relay Insulators
  • Capacitor
  • Magnetrons
  • Travelling Wave Tube
  • X-ray Tube Components
  • Electrosurgical Instrumentation
  • Implantable Packages and Feedthroughs
  • Gas Detectors
  • Microscopes (TEM, SEM)
  • High Voltage Feedthroughs
  • High-temperature Feedthroughs
  • RF Feedthroughs
  • Optoelectronics and Power Tube
  • Laser Tubes
  • Thyristors
  • Diodes
  • And etc

Typical Application Fields:

  • Aerospace: High-voltage/high-temperature feedthroughs, vacuum electronic devices
  • Medical: Implantable devices, X-ray tubes, precision probes
  • Vacuum/Semiconductor: Mass spectrometers, RF/microwave components, laser systems
  • Energy/Industrial: Gas detectors, oil & gas equipment, high-power electronic packaging
  • Others: Particle accelerators, deep-sea sensors, extreme-environment instrumentation

Frequently Asked Questions

1.What is the maximum operating temperature?

Depending on material combination, typical operating temperatures reach 500–800°C or higher; special configurations support even greater temperatures.

2.What is the hermeticity standard?

Standard helium leak rate ≤ 1×10⁻⁹ atm·cc/sec; high-end products can achieve 1×10⁻¹⁰ to 1×10⁻¹² Pa·m³/s.

3.Do you offer customization ?

Yes, full customization is supported from single-pin to complex multi-pin designs. 

Manufactured with advanced processes (precision cleaning → metallization sintering → nickel plating → assembly & brazing → helium leak & electrical testing), ensuring batch consistency and long-term reliability. Full customization is supported, from single-pin feedthroughs to complex multi-pin assemblies.

We deliver high-quality metallized ceramic hermetic sealing solutions to empower your projects in extreme environments and high-reliability applications!

Metallized Ceramic Catalog Download PDF

Additional information

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