Custom manufactured glass-to-metal hermetic seals from Tekna Seal are used in a variety of applications requiring hermeticity, including aerospace, automotive, batteries, electronic packages, high vacuum, medical, military and sensor packages. Tekna Seal also offers a limited selection of standard products.
Advantages of Tekna Seal Oxide Free Glass-to-Metal Hermetic Seals
The Tekna Seal proprietary oxide-free glass to metal hermetic seal process eliminates the need for pre-oxidizing of the metal components prior to glass sealing. This lack of heavy oxide interface between glass and metal allows for:
- Increased pressure withstanding
- Higher levels of hermeticity
- Repeatable, reliable processing
Eliminates the need for post oxide removal:
- Glass and metal are clean, free of etching residue
- Hazardous waste stream eliminated
Traditional Glass-to-Metal Sealing Process
Traditional glass-to-metal seals rely on a visible oxide layer formed on the metal components to allow glass flow and adhesion. This oxide layer limits the strength and hermeticity of a conventional glass-to-metal seal. This process also requires an additional operation to remove the oxide from other surfaces of the assembly. This cleanup process is usually a chemical etch, which will result in deterioration of dimensional tolerances and potentially contaminate the materials.
Material Selection for Glass-to-Metal Seals
The Tekna Seal oxide-free process allows us to use a multitude of glass-to-metal seal materials. This list is typical, yet not comprehensive. Many other materials are available upon request for your specific design.
|High||3xx Stainless Steel, 1010 Cold Roll Steel, Hastelloy, Inconel, Nitronic, Duplex Stainless Steel||Barium Alkali
|52 Ni/Fe Alloy, 446 Stainless Steel, Copper cored 52 Ni/Fe alloy, Copper clad 52 Ni/Fe alloy, Molybdenum|
|Low- Medium||Stainless Steel
|Ceramic-Glass||Hastelloy, Nickel, Copper|
42 Ni/Fe Alloy
42 Ni/Fe Alloy
|Metal Injection Alloys
|52 Ni/Fe alloy
Plating and Pin Finishes
Entire assemblies or pins selectively can be plated for improved corrosion resistance, solderability and ultrasonic wire bonding.