--- title: "Glass to Metal Seal with Induction Heating" description: "Ambrell's induction hermetic sealing systems provide the necessary control and accuracy to focus heat to a specific area of the part. " type: article version: 3 version_id: "d6e2e9cf-1e2d-4c46-9e42-b13e0462bd61" generated_at: "2026-10-02T11:25:14.394Z" date_published: "2019-09-25" language: en-us reading_time: "5 min" word_count: 894 keywords: ["Glass to Metal Seal with Induction Heating"] url: "https://www.ambrell.com/induction-heating-applications/metal-glass-sealing" --- # Glass to Metal Seal with Induction Heating > Ambrell's induction hermetic sealing systems provide the necessary control and accuracy to focus heat to a specific area of the part. ## Key Takeaways - How does Metal-to-Glass Sealing with Induction Work? - Benefits of Using Induction Heating for Hermetic Sealing - metal-glass sealing Application Notes - Our Systems for metal-glass sealing with Induction ## Contents - [How does Metal-to-Glass Sealing with Induction Work?](#how-does-metal-to-glass-sealing-with-induction-work) - [Benefits of Using Induction Heating for Hermetic Sealing](#benefits-of-using-induction-heating-for-hermetic-sealing) - [metal-glass sealing Application Notes](#metal-glass-sealing-application-notes) - [Our Systems for metal-glass sealing with Induction](#our-systems-for-metal-glass-sealing-with-induction) # Hermetic Sealing with Induction - [Home](https://www.ambrell.com) - [How It's Used](https://www.ambrell.com/induction-heating-applications) - Metal-to-Glass Author: [Dr. Girish Dahake](https://www.ambrell.com/about-girish) | Published: September 25, 2019 | Updated: July 20, 2026 ## How does Metal-to-Glass Sealing with Induction Work? Hermetic sealing is the process of creating a container that is airtight. It is commonly used to encase electrical mechanisms, as well as to contain functional gases. Induction generates an electromagnetic field in a work coil that induces currents in the conductive material of a workpiece placed within or near the coil. Friction from these currents elevates the temperature of the workpieces to be heated. [Can we help?](https://www.ambrell.com/contact-us-request-process?lead_origin=metal-glass%20sealing&linked_from=Metal%20To%20Glass%20Sealing%20[EN]&appnote_title=none) ## Benefits of Using Induction Heating for Hermetic Sealing  Our induction heating systems provide hermetic sealing processes with reliable, repeatable, non-contact and energy-efficient heat, focusing heat to a specific area of the part.  Induction offers a process without open flame. * * * ## metal-glass sealing Application Notes Select from our collection of metal-glass sealing notes, developed over 40 years supporting our customers. Read how we helped to solve their process heating challenges! [Soldering Ferrule and Module Assembly](/induction-heating-applications/appnote-request?lead_origin=soldering&appnote_filename=soldering-ferrule-and-module-assembly&appnote_title=Soldering%20Ferrule%20and%20Module%20Assembly&meta_desc=To%20heat%20ferrule%20and%20module%20assemblies%20for%20a%20soldering%20application%20in%20the%20fiber%20optics%20industry.&row_id=192891279446&table_id=125371545&linked_from=&referred_by=&a_b_version=) To heat ferrule and module assemblies for a soldering application in the fiber optics industry. [Heating a Kovar Ferrule for Glass Soldering](/induction-heating-applications/appnote-request?lead_origin=soldering&appnote_filename=heating-a-kovar-ferrule-for-glass-soldering&appnote_title=Heating%20a%20Kovar%20Ferrule%20for%20Glass%20Soldering&meta_desc=The%20solder%20formed%20a%20relatively%20uniform%20domed%20seal%20around%20the%20fiber%20despite%20the%20asymmetry%20of%20the%20open%20C%20coil.%20It%20took%20under%2010%20seconds%20to%20heat%20the%20part%20to%20soldering%20temperature&row_id=192891279448&table_id=125371545&linked_from=&referred_by=&a_b_version=) The solder formed a relatively uniform domed seal around the fiber despite the asymmetry of the open C coil. It took under 10 seconds to heat the part to soldering temperature [Hermetic Sealing a Ferrule & Fiber Optic Cable](/induction-heating-applications/appnote-request?lead_origin=soldering&appnote_filename=hermetic-sealing-a-ferrule-fiber-optic-cable&appnote_title=Hermetic%20Sealing%20a%20Ferrule%20&%20Fiber%20Optic%20Cable&meta_desc=To%20heat%20a%20Kovar%20ferrule%20and%20fiber%20optic%20cable%20to%20297%20°F%20within%2010%20seconds%20for%20a%20soldering%20application,%20to%20form%20a%20hermetic%20seal&row_id=192891279457&table_id=125371545&linked_from=&referred_by=&a_b_version=) To heat a Kovar ferrule and fiber optic cable to 297 °F within 10 seconds for a soldering application, to form a hermetic seal [Hermetically sealing a fiber optic cable in a kovar ferrule](/induction-heating-applications/appnote-request?lead_origin=soldering&appnote_filename=hermetically-sealing-a-fiber-optic-cable-in-a-kovar-ferrule&appnote_title=Hermetically%20sealing%20a%20fiber%20optic%20cable%20in%20a%20kovar%20ferrule&meta_desc=Induction%20heating%20provides%20instant%20start%20up%20time,%20requiring%20very%20little%20power%20resources,%20pin%20point%20accuracy,%20a%20clean%20source%20of%20heat%20which%20is%20easily%20integrated%20into%20existing%20automated%20systems&row_id=192891279462&table_id=125371545&linked_from=&referred_by=&a_b_version=) Induction heating provides instant start up time, requiring very little power resources, pin point accuracy, a clean source of heat which is easily integrated into existing automated systems [soldering-a-kovar-piece-with-glass-to-a-copper-base](/induction-heating-applications/appnote-request?lead_origin=soldering&appnote_filename=soldering-a-kovar-piece-with-glass-to-a-copper-base&appnote_title=soldering-a-kovar-piece-with-glass-to-a-copper-base%20&meta_desc=Induction%20heating%20provides%20ability%20to%20use%20same%20equipment%20for%20both%20assembly%20and%20repair,%20hands-free%20heating%20that%20involves%20no%20operator%20skill%20for%20manufacturing,%20and%20uniform%20control%20of%20heat%20from%20part%20to%20part&row_id=192891279478&table_id=125371545&linked_from=&referred_by=&a_b_version=) Induction heating provides ability to use same equipment for both assembly and repair, hands-free heating that involves no operator skill for manufacturing, and uniform control of heat from part to part * * * ## Our Systems for metal-glass sealing with Induction [ ### EASYHEAT Models ](https://www.ambrell.com/products#easyheat) #### Headline Add your content here. ### EKOHEAT Models ](https://www.ambrell.com/products#ekoheat) #### Headline ### Workhead Models ](https://www.ambrell.com/products/workheads) #### Headline ### Product Spectrum ](https://www.ambrell.com/products#spectrum) #### Headline Four Ways To Contact Ambrell for Support [](https://www.ambrell.com/products/demo-request) [Request a Demo](https://www.ambrell.com/products/demo-request) [](https://www.ambrell.com/contact-us) [Give Us a Call](https://www.ambrell.com/contact-us) [](mailto:sales@ambrell.com) [Send an Email](mailto:sales@ambrell.com) [](https://www.ambrell.com/services/applications-lab) [Free Lab Services](https://www.ambrell.com/services/applications-lab) ### AMBRELL CORPORATION 1655 Lyell Avenue Rochester, NY 14606 United States  [](//www.ambrell.com/directions) [Directions](//www.ambrell.com/directions) [T: +1 585 889 9000](tel:15858899000) F: +1 585 889 4030 [Contact Sales](mailto:sales@ambrell.com) [Contact Orders](mailto:ambrellorders@ambrell.com) [Contact Service](mailto:service@ambrell.com) ### AMBRELL B.V. 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