Ceramic airtight terminal
In recent years, devices related to electronic equipment have been strongly demanded to be applicable in high vacuum environments, as well as to be fine and highly precise. Consequently, the materials used in products are being transitioned from resins and glass to ceramics in response to the need for improved quality. Our ceramic hermetic terminals use ceramics (such as Al2O3) as insulating and hermetic materials, maintaining hermeticity in high vacuum environments, alleviating concerns about aging degradation, and enhancing applicability and reliability in high-temperature environments. As a result, they are widely used in equipment and facilities in fields such as space, medical, and nuclear power, where high vacuum and high pressure compatibility is particularly required.
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basic information
Our ceramic hermetic terminals utilize a bonding and sealing technology for ceramics and metals that we have developed over many years, resulting in products with high hermeticity. High hermeticity: Below 1x10-10 [Pa･m3/S] (leak rate in He gas) Heat resistance temperature: Below 350 [℃] (baking temperature, in inert gas or vacuum) 200 [℃] (continuous use temperature) *Please inquire as it may vary by product. High electrical insulation: We use ceramic as the insulating material. Special products: We accept new designs and manufacturing. We accept new designs and manufacturing regardless of quantity. Additionally, we will select products that meet your requirements from our extensive manufacturing track record.
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Applications/Examples of results
The device has a container that seals a vacuum (for special purposes, pressure/liquid and gas) and electrically connects and insulates the inside and outside of the container. Ultra-high vacuum equipment Superconducting application equipment Semiconductor manufacturing equipment Power-related equipment Medical analysis equipment Space and nuclear equipment
Line up（6）
| Model number | overview |
|---|---|
| Connector Terminal | ・Standardized 3-core to 48-core compatible with MIL-DTL-5015 specifications. The thermocouple type uses materials equivalent to thermocouples or compensating wire. Special specifications are also accepted. |
| Coaxial Terminal | Upon request, we will install the specified flange and deliver it. Special specifications are also accepted. |
| Current Terminal | We accept design and manufacturing with any specified number of cores. Special specifications are also accepted. |
| Insulation Terminal | This is an insulation terminal for sealing the ends of sheath heaters and thermocouples. Special specifications are also accepted. |
| Insulation Joint | We provide products according to the withstand voltage for insulation piping joints for vacuum, gas, liquids, etc. We will design and manufacture special items according to the piping shape. We have prepared insulation pipes with improved water resistance for cooling water. Special specifications are also accepted. |
| Special Products | We also accept assembly design of composite products such as connector terminals and current terminals. Large items can be manufactured (outer diameter Φ500). Please contact us if you have difficulties with special brazing. |
Company information
The name MARUWA carries the meaning of "everyone coming together in harmony." The logo of MARUWA uses blue, which is said to represent hope, and expresses the "harmony, connections, and bonds between people," which is also the origin of the company name. Our company values people. We believe that a company can only achieve sustainable growth and development by valuing and utilizing the strengths and individuality of each person. It is unacceptable to suppress or distort these qualities for the sake of the company. We hope that our growth and development will contribute to the happiness of not only our employees but also the local community and many others, and we are committed to our daily business activities with all our efforts. In recent years, the importance of preserving the natural environment on this planet we live on has been emphasized from various perspectives. We feel very fortunate that the opportunities for our ceramic products to be used for environmental conservation are increasing, and the demands and expectations for new products in this regard are becoming stronger.