The Global High Temperature Sealing Glass Market was valued at USD 312.8 million in 2024 and is projected to reach USD 428.6 million by 2030, growing at a Compound Annual Growth Rate (CAGR) of 5.6% during the forecast period (2024–2030). This growth is being driven by expanding applications across battery manufacturing, electronics, semiconductors, and home appliances, coupled with the accelerating demand for advanced materials that can withstand extreme thermal conditions while maintaining structural integrity.
As industries increasingly demand reliable hermetic sealing solutions for high-temperature environments, the need for specialized glass formulations has never been greater. In this comprehensive analysis, we profile the Top 10 Companies in the High Temperature Sealing Glass Industry—a mix of technology leaders, specialty glass producers, and materials science innovators shaping the future of thermal management and industrial sealing.
🔟 1. Schott AG
Headquarters: Mainz, Germany
Key Offering: SCHOTT PYRAN®, Hermetic Sealing Glass Solutions
Schott AG is a global leader in specialty glass manufacturing, offering advanced high-temperature sealing glass solutions with exceptional thermal resistance (up to 1000°C) and chemical stability. Their products serve critical applications in energy storage, semiconductor manufacturing, and aerospace industries where thermal cycling and mechanical stress are primary considerations.
Technology Leadership:
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Patented PYRAN® glass formulations for extreme temperature applications
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Custom engineered solutions for battery sealing and electronics encapsulation
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Global R&D centers dedicated to advanced material development
Download FREE Sample Report: High Temperature Sealing Glass Market – View in Detailed Research Report
9️⃣ 2. Corning Incorporated
Headquarters: Corning, New York, USA
Key Offering: Corning® HPFS® Fused Silica, Specialty Sealing Glasses
Corning is renowned for its materials science expertise and specialty glass products designed for demanding thermal environments. Their high-temperature sealing solutions are critical components in semiconductor equipment, analytical instruments, and cleantech applications.
Technology Leadership:
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High-purity fused silica formulations with superior thermal shock resistance
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Customized coefficient of thermal expansion (CTE) matching for critical assemblies
8️⃣ 3. AGC Inc.
Headquarters: Tokyo, Japan
Key Offering: AGC Sealing Glass Series, Thermal Management Solutions
AGC (formerly Asahi Glass Company) manufactures high-temperature sealing glasses with advanced thermal and electrical properties, serving global electronics, automotive, and energy storage markets.
Technology Leadership:
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Development of low-melting point sealing glasses with enhanced chemical durability
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Expanding production capacity for EV battery sealing applications
7️⃣ 4. Nippon Electric Glass Co., Ltd.
Headquarters: Otsu, Japan
Key Offering: NEG High Temperature Sealing Glass Products
Nippon Electric Glass specializes in high-performance glass products, including sealing glasses engineered for temperatures exceeding 800°C in industrial and electronics applications.
Technology Leadership:
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Lead-free and environmentally friendly glass formulations meeting global regulatory standards
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Advanced hermetic sealing technology for automotive sensors, LED packages, and MEMS devices
6️⃣ 5. Elan Technology
Headquarters: Milford, Connecticut, USA
Key Offering: Custom High Temperature Sealing Glass Compositions
Elan Technology designs and manufactures specialized glass compositions tailored for specific thermal and chemical requirements, serving defense, aerospace, and medical equipment manufacturers.
Technology Leadership:
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Specialized in low-expansion glass-ceramic materials for high-temperature sealing applications in power electronics and industrial systems.
Download FREE Sample Report: High Temperature Sealing Glass Market – View in Detailed Research Report
5️⃣ 6. Johnson Matthey
Headquarters: London, United Kingdom
Key Offering: JM High Temperature Sealing Products, Technical CeramicsJohnson Matthey provides advanced materials solutions including high-temperature sealing glasses for fuel cell assemblies, battery technologies, and industrial ceramic applications.
Technology Leadership:
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Specialized glass-ceramic sealants for solid oxide fuel cells (SOFC) and other high-temperature energy systems requiring long-term reliability.
4️⃣ 7. 3M Company
Headquarters: Saint Paul, Minnesota, USA
Key Offering: 3M™ High Temperature Sealing Products3M leverages its materials science expertise to develop innovative sealing solutions for demanding industrial processes operating at high temperatures.
Technology Leadership:
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Development of composite sealing materials combining glass with advanced ceramics for enhanced thermal cycling performance and mechanical strength.
3️⃣ 8. Fusite (Emerson)
Headquarters: Saint Louis, Missouri, USA
Key Offering: Fusite Glass-to-Metal Seals, Thermal Management ComponentsFusite, a division of Emerson, specializes in precision glass-to-metal sealing technology for high-temperature applications in aerospace, defense, and industrial automation systems.
Technology Leadership:
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Advanced hermetic sealing solutions for extreme environments up to 950°C
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Custom-engineered headers and feedthroughs for harsh operating conditions
2️⃣ 9. Mo-Sci Corporation
Headquarters: Rolla, Missouri, USA
Key Offering: Mo-Sci Sealing Glass Products, Specialty Glass PowdersMo-Sci Corporation develops and manufactures specialty glass compositions, including high-temperature sealing glasses for medical devices, aerospace components, and industrial controls.
Technology Leadership:
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Glass frit and preform manufacturing for high-temperature joining and sealing applications.
1️⃣ 10. Shenzhen SAM
Headquarters: Shenzhen, China
Key Offering: SAM High Temperature Sealing Glass SeriesShenzhen SAM is a growing manufacturer of high-temperature sealing glass products, serving domestic battery manufacturers and electronics companies with cost-effective thermal management solutions.
Technology Leadership:
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Cost-competitive sealing solutions for consumer electronics, small-scale energy storage, and home appliance applications.
🌍 Outlook: The Future of High Temperature Sealing Glass Is Smart and Sustainable
The high temperature sealing glass market is undergoing significant transformation as industries demand more sophisticated thermal management solutions. While traditional formulations continue to serve established applications, the industry is investing heavily in advanced material science, nanoscale engineering, and environmentally sustainable production methods.
📈 Key Trends Shaping the Market:
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Rising demand for hermetic sealing in next-generation lithium-ion and solid-state batteries
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Increased requirements for reliable sealing in semiconductor manufacturing equipment and MEMS packaging
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Growing adoption of high-temperature resistant sealing glasses in clean energy applications including fuel cells and solar thermal systems
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Accelerating innovation in bio-compatible sealing glasses for medical implants and diagnostic equipment
Read Full Report: High Temperature Sealing Glass Market – View in Detailed Research Report
The companies listed above are not only enabling advanced industrial applications—they’re pioneering the next generation of thermal management materials.
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