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Hermetic seals block air completely. Hermetic seals for crystal devices are sealed with glass and metal so they prevent humidity and dirt getting in.

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Communication devices such as police radio pocket beepers, office automations, computers, crystallite liquid, automobiles, etc.

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Standard type of hermetic seals for crystal blank devices and crystal filters.
We also produce and design other than standard type for special order.

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MTEC’s hermetic seals for crystal devices are great for air tightness, insulation properties resistance to clime and are able to use for high frequency crystal device.

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| For Quartz crystal unit | For Quartz crystal filter | ||||||
|---|---|---|---|---|---|---|---|
| Drawing No. | Blank size | Drawing No. | Blank size | ||||
|
φ4.0 mm |
|
φ4.0 mm | ||||
|
φ4.5 mm |
|
φ4.5 mm | ||||
|
φ5.2 mm |
|
φ5.2 mm | ||||
|
φ5.5 mm |
|
φ5.5 mm | ||||
|
φ6.0 mm |
|
4.4×3.3mm | ||||
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| Welding equipment Support automatic welding machine, Laser automatic welding machine. |
| Inspection apparatus Support power meter, Microscope, Profile projector, Insulate measure. |
