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Hermetically Sealed Windows use ceramic-to-metal sealing technology.

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February 24, 2010 - Manufactured using ceramic-to-metal sealing technology, windows suit optical, laser, and IR applications. Bonding properties and polycrystalline structure of Kryoflex® allow production of sight or wave-guide windows that maintain hermetic integrity under extreme environmental conditions. Due to sealing temperature, engineers can choose optical glasses such as sapphire, quartz, and BK10. Windows can be laser welded to range of metals, including aluminum, titanium, and iron/nickel alloys.

PA&E Announces New Ceramic Sealed Hermetic Windows

(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)

434 Olds Station Road
Wenatchee, WA, 98801

Press release date: February 17, 2010

Sealing Process Offers Highest Levels of Hermetic Performance, Greater Flexibility

Wenatchee, WA - PA&E is now using its patented ceramic-to-metal sealing technology to manufacture hermetically sealed windows for optical, laser and infrared applications. The unique bonding properties and polycrystalline structure of PA&E's Kryoflex® material now allow the company to produce sight or wave-guide windows that maintain the highest levels of hermetic integrity under the extreme environmental conditions. This new product is particularly well suited for space or defense-related LADAR, laser designation/acquisition systems and medical endoscopes.

PA&E's ceramic-sealed hermetic windows offer engineers additional advantages beyond high hermetic performance. Because Kryoflex seals at relatively low temperatures, they can now choose from a variety of optical glasses such as sapphire, quartz and BK10. These new windows are also designed to be laser welded to a range of metals, including aluminum, titanium and iron/nickel alloys, for additional flexibility.

Windows produced with this new process are extremely robust and reliable because a key point of failure - solder joint fatigue - is eliminated. They provide a leak rate equal to or less than 1X10-9 cc/sec helium at 1 atmospheric differential pressure, even when subjected to extreme thermal and mechanical shock and, in medical applications, will maintain integrity after repeated autoclave sterilization.

Unlike solder- or braze-sealed windows, PA&E's ceramic-sealed hermetic windows do not require metallization. Eliminating this step can, reduce both costs and processing time and allows anti-reflective coatings to be applied after the sealing process, ensuring that the critical A/R coating is not impacted by subsequent processing.

PA&E also offers a number of other window sealing options including: proprietary active braze sealing; a patented direct sealing process; standard braze sealing and solder sealing. For more information on hermetic windows from PA&E or to learn more about the company's other interconnect products, EMI filters, and integrated electronic packaging capabilities, contact PA&E at 509-664-8000 or visit

PA&E, Inc. is an integrated manufacturing company, specializing in technically demanding ceramic and metal components and assemblies, hermetic connectors and advanced micro-electronic hermetic packaging for global leaders in the defense, space, medical and commercial industries. PA&E is ISO 9001:2008/AS9100 Rev B certified and NADCAP compliant.

PA&E - 434 Olds Station Road - Wenatchee, WA - 98801 - Tel: 509-664-8000 - Fax: 509-664-6868
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