Hermetic Seal Technology (HST) has been setting the standards for custom glass-to-metal seals, especially lithium battery seals, since 1994. We have specially formulated Lithium corrosion resistant glass to greatly reduce corrosion and to isolate lithium electrolytes, such as lithium / manganese dioxide (LiMnO2), lithium / sulfur dioxide (Li/SO2), and lithium / thionyl chloride (Li/SOCl2) in lithium batteries, from foreign agents. HST lithium battery seals can withstand corrosive chemicals, electrical variations, as well as extreme temperatures to give your battery a long shelf life.

For high performance lithium batteries, we fabricate reliable hermetic seals from high-conductivity pin materials, exotic alloys and both standard and custom formulated lithium battery glasses. We specialize in consistently processing lithium compatible glass materials including Cabal 12, TA-23, and Babal. Sealing hermetic glass to stainless steels or pure metals such as titanium and molybdenum, is our specialty.

Our extensive sealing and welding capabilities enable us to seal into an eyelet, seal directly into the battery lid, or even hermetically weld the eyelet into the lid. We specially design eyelets that can be either resistance-welded or laser welded into the battery lid. With in-house hermeticity testing capabilities, HST performs 100% leak checks on all parts to guarantee that the seal is hermetic to better than 1 x 10-8 cc/sec helium.