Hermetic Seals Division|KOTO Electric Co., Ltd.

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Hermetic Seals

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Koto Electric Group proceeds with the development of unique technology for hermetic seals to respond to the needs of customers in a timely manner.

We manufacture and distribute hermetic seals for small cylindrical quartz oscillators which are mainly used in cell phones; and hermetic seals for automobile airbags and seat belts. We also manufacture customized hermetically-sealed metal packages for electronic components.
In addition, our optical products, namely, direct view filament displays for aerospace are manufactured using our hermetic seals technology. Our optical filters which are used in combination with the direct view filament displays are widely used in the aerospace industry around the world.

ハーメチックシール めっき Optical Bonding<br>Optical Filter Read Out Lamp

Hermetic Seals

Our hermetic seals achieve high levels of hermetisity with our glass to metal sealing technology.
We manufacture and distribute hermetic seals for small cylindrical quartz oscillators which are used in cell phones, clocks and watches, automobile air bags and seat belts. We also manufacture customized hermetic seals for electronic components.

Metal Plating

Koto strives for developments of our own technology in hermetic seals, special illuminations and plating to quickly respond to the customers' demands. In plating metals, we have made it possible to plate any metals demanded in various fields and consistently devote ourselves to develop high-volume production & process. We also develop UV devices used in preprocessing conscientious to the environments, and supply them to the makers adopting the UV technology to cleansing, modifying and hardening on surface of resins and glasses as well as metal plating suppliers.

Optical Bonding / Optical Filter

Koto strives for developments of our own technology in hermetic seals, special illuminations and plating to quickly respond to the customers' demands. In plating metals, we have made it possible to plate any metals demanded in various fields and consistently devote ourselves to develop high-volume production & process. We also develop UV devices used in preprocessing conscientious to the environments, and supply them to the makers adopting the UV technology to cleansing, modifying and hardening on surface of resins and glasses as well as metal plating suppliers.

Read Out Lamp

Readout lamps utilizing the characteristics of sunlight readable displays are fitted in aircraft instrument panels for their high performance displayed as numerical alphabetical and bar graph display lamps. Direct view filament display is able to read its display under the direct ray of the sun.(Sunlight readable). The packages for the display lamps are used our hermetic seals.