Legacy Glass to Metal Seals and hermetically sealed packages

Remtec Joins LTI's Family

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News & Events






LTI has expanded its product offering in glass and ceramic TO-250 series power packages to meet all commercial and military / hi-rel customer requirements.  Power Transistor Hybrib Packages, including TO-254, TO-257, TO-258 and TO-259 are available with Cu, CuW and Glidcop heat sink base materials.  Custom packages are also available for a wide range of military, avionics, aerospace and automotive applications. 

Welcome to Legacy Technologies

As one of the oldest and most reliable Glass to Metal Seal Manufactures, Legacy Technologies Inc. has the unique experience coupled with our brand new state of the art facility located in Mission Kansas USA to provide the highest reliable hermetic seals in the industry.
Although primarily known as the world's leading manufacturer of high reliability precision quartz crystal holders, LTI's wide range of Glass to Metal Seal capabilities have been used to design, develop, and manufacture products for many industries including aerospace, telecommunications, medical, automotive and sensor applications.
Our expertise in glass-to-metal sealing extends to both matched and compression type seals. Our experience and in-house capabilities for plating, manufacturing precision metal stampings, forming and welding fine metallic ribbon, and other secondary operations have answered the needs of a large variety of customers outside the frequency control industry. For either highly specialized products, or the more mundane, we welcome your inquiries and look forward to helping you find solutions.
 LTI offers many basic versions of hermetic feedthroughs; however, the technology used to create them is always quite similar: metallic conductors penetrate through a metal housing that contains several openings. Sintered glass rings or glass tubing segments are melted around the conductors to provide electrical insulation, enhance mechanical strength and center the conductors in the openings. There are two primary ways to fuse glass and metal: the matched glass-to-metal seal or the more commonly used compression glass-to-metal seal.

Legacy Technologies, a custom glass to metal seal manufacturer, specializes in glass-to-metal hermetic seals. Our glass-to-metal seals are custom built to your design specifications, using our proprietary oxide-free hermetic sealing process. The oxide-free glass sealing process allows the customer to specify a wide range of metals including Titanium and other exotic alloys. Standard metals such as stainless steel, Kovar and molybdenum can also be used.
How do you get electrical or optical signals in or out of a package that has been hermetically sealed? This challenge is something that many companies in the electronics industry must compete in every day. In this case, the key purpose of hermetic packaging is to protect highly sensitive electronics such as sensors, laser diodes, opto-electronic components, or telecom crystal oscillators from corrosion, humidity, and other undesirable influences.


 Many of you are familiar with and/or are using our current line of feedthroughs.   We received numerous comments about the need for additional product offering in our feedthrough line.   




LTI is pleased to announce we have improved our in house vertical integration capabilities and now offer a much wider range of feedthrough product mix.


Please click on the link below to review examples.  Feel free to browse our product drawings tab to view a wide variety of hermetic seals.

                                             (Click here.)
    Glass to Metal Seals, Hermetic packages &
    Hermetic feedthroughs

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