Hermetic Seals

The Tantalum Products Group manufactures hermetically sealed Tantalum capacitor end seals including Tantalum Shell and Tantalum Tube or Pin.

These matched seals utilize glass materials with similar coefficients of expansion. This insures that both materials will cool and shrink at the same rate, preventing glass cracking or metal failure. 

When heated and cooled, the glass melts and creates a strong molecular bond with the oxides of the surface metal.

Another type of hermetic seal is a Compression Seal in which the casing metal has a higher coefficient of expansion than the glass. 

During manufacturing, the metal expands more rapidly than the melting glass. When the temperature begins to decrease, the metal contracts more rapidly than the cooling glass which puts the glass under compression. 

This creates a strong, reliable part that is not dependant upon a molecular bond with oxide.

Mallory Sonalert Tantalum Products Group is committed to helping its customers find hermetic sealing solutions whether its simple or complex. Contact us to find out how we can fulfill your hermetic seal needs.