The Global High Temperature Sealing Glass Market was valued at USD 2.1 Billion in 2024 and is projected to reach USD 3.2 Billion by 2030, growing at a Compound Annual Growth Rate (CAGR) of 6.8% during the forecast period (2024–2030). This robust growth is fueled by the escalating demand from the electronics and semiconductor sector, the expansion of the electric vehicle (EV) battery market, and the continuous innovation in materials for demanding industrial applications.

As industries increasingly operate under extreme thermal conditions, the critical role of high temperature sealing glasses in ensuring reliability, hermeticity, and longevity is more pronounced than ever. In this blog, we profile the Top 10 Companies in the High Temperature Sealing Glass Industry—a group of specialized material scientists and industrial glass leaders shaping the future of thermal management and sealing technologies.

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🔟 1. SCHOTT AG

Headquarters: Mainz, Germany
Key Offering: Glass-to-Metal Seals, CERAN® glass-ceramic, Specialty Sealing Glasses

SCHOTT AG is a global technology leader in specialty glass and glass-ceramics. With over 130 years of experience, the company provides high-performance sealing solutions for applications ranging from household appliances to aerospace. Their expertise in glass-to-metal sealing is critical for creating durable, hermetic packages for sensitive electronic components.

Innovation Initiatives:

• Pioneering laser-weldable glass compounds for electronics

• Development of ultra-high temperature seals for aerospace and defense

• Sustainable manufacturing processes with a focus on energy efficiency

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9️⃣ 2. Corning Incorporated

Headquarters: Corning, New York, USA
Key Offering: PYREX®, Specialty Sealing Glasses, Advanced Ceramics

Corning is a world-renowned innovator in materials science, with a rich history of developing glass solutions for extreme environments. Their high temperature sealing glasses are essential in applications requiring thermal shock resistance and chemical durability, serving the automotive, life sciences, and telecommunications industries.

Innovation Initiatives:

• R&D in alkali-free sealing glasses for next-generation displays

• Expansion of capabilities for EV battery cell sealing solutions

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8️⃣ 3. AGC Inc.

Headquarters: Tokyo, Japan
Key Offering: Fine Glass Powders, Glass Frits, Sealing Materials

AGC (formerly Asahi Glass Co.) is one of the world’s largest glass manufacturers, offering a wide portfolio of high temperature sealing materials. Their products are integral to the production of semiconductors, solar panels, and automotive sensors, where precise thermal expansion matching is paramount.

Innovation Initiatives:

• Development of low-temperature sealing glasses for flexible electronics

• Investment in recycling technologies for glass manufacturing waste

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7️⃣ 4. Nippon Electric Glass Co., Ltd. (NEG)

Headquarters: Otsu, Shiga, Japan
Key Offering: Borosilicate Glass, Sealing Glass Powders, Glass Components

Nippon Electric Glass is a leading supplier of specialized glass products, with a strong focus on the electronics industry. Their high temperature sealing glasses are known for their excellent insulating properties and reliability in harsh operating conditions.

Innovation Initiatives:

• Advanced glass compositions for 5G infrastructure components

• Collaborations with automotive suppliers for thermal management solutions

Download FREE Sample Report: High Temperature Sealing Glass Market – View in Detailed Research Report

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6️⃣ 5. Elan Technology

Headquarters: Newport, Rhode Island, USA
Key Offering: Custom Glass Formulations, Sealing Glass, Technical Ceramics

Elan Technology specializes in the custom formulation and manufacture of specialty glasses and ceramics. They work closely with clients to develop tailored sealing solutions that meet specific thermal, mechanical, and electrical requirements for defense, medical, and industrial applications.

Innovation Initiatives:

• Proprietary glass compositions for hermetic medical device packaging

• Rapid prototyping services for custom sealing glass development

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5️⃣ 6. Johnson Matthey

Headquarters: London, United Kingdom
Key Offering: Glass Sealants, Advanced Materials, Catalytic Converters

Johnson Matthey is a global leader in sustainable technologies, with a significant materials science division. Their sealing glasses are critical components in emission control systems, solid oxide fuel cells, and other high-temperature chemical processes.

Innovation Initiatives:

• Development of sealing solutions for hydrogen economy applications

• Focus on circular economy principles in material sourcing and production

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4️⃣ 7. Fusite Corporation (Emerson)

Headquarters: Scottsville, Kentucky, USA
Key Offering: Hermetic Seals, Glass-to-Metal Feedthroughs, Custom Components

Fusite, a subsidiary of Emerson, is a specialist in hermetic sealing technology. Their high temperature glass seals are designed to provide reliable electrical connectivity while maintaining a vacuum or pressure boundary in compressors, sensors, and other critical systems.

Innovation Initiatives:

• Miniaturization of seals for compact electronic devices

• Enhanced sealing solutions for high-pressure environments

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3️⃣ 8. 3M

Headquarters: Saint Paul, Minnesota, USA
Key Offering: Adhesives, Sealants, Advanced Materials

While known for its diverse product portfolio, 3M is also a significant player in high-performance sealing materials. Their advanced ceramic and glass-based sealants are used in applications requiring exceptional temperature resistance and environmental durability.

Innovation Initiatives:

• Development of next-generation thermally conductive interface materials

• Investment in sustainable material science R&D

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2️⃣ 9. Mo-Sci Corporation

Headquarters: Rolla, Missouri, USA
Key Offering: Specialty Glasses, Glass Sealing Powders, Bioactive Glasses

Mo-Sci specializes in the research, development, and production of high-technology glass products. Their sealing glasses are utilized in a variety of high-temperature applications, including medical implants, aerospace components, and energy storage devices.

Innovation Initiatives:

• Custom glass formulations for implantable medical devices

• Sealing solutions for next-generation battery technologies

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1️⃣ 10. Shenzhen SAM

Headquarters: Shenzhen, China
Key Offering: Electronic Glass, Sealing Materials, Glass Components

Shenzhen SAM is a leading Chinese manufacturer of specialty glass products, serving the rapidly growing electronics and semiconductor markets in Asia. The company provides cost-effective sealing solutions while maintaining high standards of quality and performance.

Innovation Initiatives:

• Expansion of production capacity for consumer electronics seals

• Development of sealing glasses for domestic EV battery manufacturers

Get Full Report Here: High Temperature Sealing Glass Market – View in Detailed Research Report

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🔬 Outlook: The Future of High Temperature Sealing Glass Is Smarter and More Integrated

The high temperature sealing glass market is undergoing a significant transformation. While traditional borosilicate and glass-ceramic compositions continue to dominate, the industry is investing heavily in advanced material formulations, nanotechnology, and integrated sealing solutions for next-generation applications.

📈 Key Trends Shaping the Market:

• Increasing demand for miniaturized, high-performance seals in 5G and IoT devices

• Rapid expansion of EV battery manufacturing driving need for reliable cell sealing

• Development of ultra-high temperature seals for aerospace and power generation

• Growing emphasis on sustainable and recyclable glass compositions

Get Full Report Here: High Temperature Sealing Glass Market – View in Detailed Research Report

The companies listed above are not only supplying essential materials—they’re driving the technological advancement that enables innovation across multiple high-tech industries.