Protect and Extend the Product Life with Our Low Temperature Sealing Glass
Featured Product
Sealing Glass Powder
Expertly crafted for optimal flow and efficiency, our sealing glass powder, provided in form of granulates, offer unmatched bonding strength, customizable colors, and seamless integration into various industries. Ideal for high-precision manufacturing, they're the go-to solution for reliable, durable seals.
Glass Preforms
Our company excels in crafting customized glass and glass-to-metal seals with unparalleled precision. Leveraging advanced powder molding technology, we guarantee consistent product weight and dimensions, while minimizing organic residue to ensure superior mechanical performance and exceptionally low porosity.
Applications
  • Battery End Seals

    Introducing our glass to metal seal battery terminal, the key for your battery to withstand harsh environments, including extreme temperatures and corrosive conditions. Less likely to fail compared to other sealing methods, they are suitable for critical applications like smart meters for wtater, electricity, and gas, measuring instruments, medical devices, and positioning systems in aerospace. Extend the life of your battery and protect against leakage and contamination with our seals.

  • Compressor Terminals

    Engineered with state-of-the-art glass-to-metal sealing technology, our terminals are designed with high resistance of 100 gigaohms, withstand up to 3700V without electrical breakdown, and feature exceptional mechanical strength, consistent product performance, and excellent cost-effectiveness, all in a compact and efficient design optimized for space-saving without compromising on performance.

  • Glass-to-metal-sealed Connectors
  • Glass-to-metal-sealed TO Packages
  • Smart Watch Casebacks
  • Pressure Sensors
  • Glass-to-metal-sealed Feedthroughs
Understanding the Basics: Sealing Glass Definition
Sealing glass is a type of technical glass used to create airtight seals, typically in industrial or scientific applications. This kind of specialty glass is designed to bond with metals and ceramics when heated, forming a tight seal that is both mechanically strong and hermetically sealed (air- and watertight). The key property of sealing glass is its thermal expansion characteristics, which are closely matched to those of the material it is intended to bond with. This compatibility is crucial to prevent stress and potential breakage due to differences in expansion rates when the joined materials are subjected to temperature changes.
Key Consideration:
Sealing Glass Characteristics

Optimal Sealing Temperatures

Achieve perfect bonds at temperatures that preserve integrity.

Harmonized Thermal Expansion

Our seals match your materials, ensuring durability against thermal stress.

Eco-Friendly, Lead-Free Glass

Safe for both people and the planet, our seals meet stringent environmental standards.

Customizable Colors

Tailor your seals to fit any design aesthetic, enhancing product appeal with a spectrum of color options.


Glass Specifications & Applications
No. Code Glass Composition Density
g/cm3
Sintering Temperature
Tm/℃
TEC/10-6(30-300℃) Color Applications
1 ST015 SiO2-Na2O-K2O 2.58 950-960 10.6±0.5 Black Sealing for carbon steel and stainless steel
2 ST408 SiO2-Na2O-K2O 2.695 930 10.5±0.5 Black Sealing for carbon steel and stainless steel
3 SN001 SiO2-Na2O-K2O 2.35 970~980 10.5±0.5 Black Sealing for carbon steel and stainless steel
4 SK016 SiO2-Na2O-K2O 2.254 970~980 5.0±0.5 Green, Blue, White, Brown Sealing for Kovar
5 LC-1 Bi2O3-ZnO-B2O3 6.7 500-530 11±0.5 Dark Green Conductive paste,low-temperature sealing
6 SL-B52 SiO2-BaO 3.19 850 8.8±0.5 White LTCC
7 SL-G01b SiO2-BaO-CaO 3.03 850 10±0.5 White LTCC
Choose Sinopride:
A Premium Glass Preform Manufacturer from China
We are a premier hermetic sealing glass manufacturer in China specializing in the research and production of high-quality sealing glass powder and related products and solutions. Our goal is to protect critical components from moisture, dust, thermal variations, and shocks for optimal performance and longevity in demanding applications. Choose us for our shared commitment to delivering products that embody precision, durability, and unparalleled quality.
30+
Years of Experience
20+
Members of QC Team
11+
Members of R&D Team
600+
Annual Production in Tonnes
39+
Patents Granted
Glass to Metal Seal Design Guide and Process
01. What is a Glass to Metal Seal?

A glass to metal seal is a critical component used in various industries to create a hermetic seal between glass and metal parts. This technology ensures airtight sealing, which is essential in environments where preventing gas or liquid leaks is crucial.

02. How are Glass to Metal Seals Manufactured?

Glass to metal seal manufacturers employ specialized processes involving the careful selection of metal and glass materials, ensuring compatibility and thermal expansion rates. The process typically involves melting the glass into a metal component, creating a bond that seals upon cooling.

03. What are the Common Applications of Glass to Metal Seals?

Glass to metal seals are widely used in electronics for hermetic connectors, in aerospace for pressure-tight windows, and in medical devices for implantable components. Their ability to maintain integrity under extreme conditions makes them ideal for these applications.

04. What is Sealing Glass and How is it Used?

Sealing glass is a specific type of glass formulated to bond with metals. It's used in creating glass to metal seals due to its thermal expansion properties, which closely match those of the metal, ensuring a durable and robust seal.

05. What are the Benefits of Hermetic Sealing in Glass to Metal Seals?

Hermetic sealing in glass to metal seals offers numerous benefits, including protection against moisture and contaminants, preservation of vacuum or pressure conditions, and enhanced durability and reliability in harsh environments.

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