
CGIM LLC is a borosilicate glass supplier. We offer borosilicate glass fabrication services to meet your custom needs. Whether you’re in need of borosilicate fabrication services for standard applications that are heat and shatter-resistant or if you’re looking for more advanced and custom borosilicate glass fabrication services, we have got you covered! We supply borosilicate glass in all shapes, sizes, & materials and promises quick delivery at competitive prices. Our borosilicate glass, akin to that used in original Pyrex products, provides exceptional durability and resilience.
Borosilicate Glass Applications
Borosilicate glass such as Schott Borofloat® & Schott Supremax® is typically specified for applications that require glass with unique chemical, thermal, mechanical and optical properties. When glass must be able to withstand higher temperatures, resist chemicals, and withstand a high degree of thermal shock, borosilicate glass is a dependable selection.
Borosilicate is the preferred glass material for a variety of applications requiring heat and shatter resistance. Composed of silica and at least 5% boron oxide, products manufactured with borosilicate are perfect for reduced breakage and chemical resistance. For even more specialized requirements, explore our fused quartz fabrication services, which offer additional benefits for demanding environments.
Products that commonly use borosilicate glass include:
- Laboratory equipment such as beakers, test tubes, and telescopic mirrors
- Aquarium heaters
- Flashlight lenses
- Micro-wave safe containers
- Kitchenware similar to Pyrex
Properties of Borosilicate Glass
Borosilicate glass is developed through the addition of boron to the glass frit composition of silicate sand, soda, and ground lime. Its high thermal and chemical resistance, along with its excellent transparency and surface quality, making it ideal for high-tech special glass applications.
Industries That Use Borosilicate Glass:
Borosilicate glass is commonly found in the following industries:
- Lighting glass
- Chemical
- Home appliance
- Photovoltaic & solar
- Precision engineering optics
- Medical
- Biotechnology
- Semiconductor engineering

How is Borosilicate Glass Manufactured?
Borosilicate glass is fabricated by adding boron/boric oxide to standard glass frit composition including silicate sand, soda, and ground lime. Once added, the mixture is heated to extremely high temperatures for extended periods. The material, now molten, is processed into different glass molds and shapes. In the case of Borofloat, Schott employs its exclusive and highly advanced micro float production line to produce polished high-quality sheets in a wide variety of thicknesses. For sections thicker than one inch, Schott’s rolled Supremax borosilicate plate is available up to 57.2 mm in thickness. BOROFLOAT® 33 properties is what makes it unique.
Borosilicate Glass Sizes in Stock
| Stock sizes, polished finish: | |||
| .7 mm | 2.75 mm | 6.5 mm | 15 mm |
| 1.1 mm | 3.3 mm | 7.5 mm | 16 mm |
| 1.75 mm | 3.8 mm | 9 mm | 19 mm |
| 2 mm | 5 mm | 11 mm | 25.4 mm |
| 2.25 mm | 5.5 mm | 13 mm | |
| Stock sizes, rolled finish: | |||
| 34.9 mm | 41.3 mm | 47.6 mm | 57.2 mm |
The Pyrex Influence on Borosilicate Glass
Pyrex has long been synonymous with high-quality, durable glassware, originally crafted from borosilicate glass. At CGIM LLC, we uphold this legacy by offering borosilicate glass that mirrors the resilience and versatility that made Pyrex a household name.
Shared Qualities
Like the original Pyrex products, our borosilicate glass is celebrated for:
- Thermal Shock Resistance: Ideal for applications requiring exposure to high temperatures and rapid temperature changes.
- Chemical Durability: Perfect for environments where chemical exposure is a concern.
- Versatility: Used in everything from laboratory equipment to kitchenware, similar to Pyrex.
Modern Applications
While Pyrex has become a staple in many homes, our borosilicate glass extends its incredible properties to industrial, medical, and technological fields, maintaining the quality and performance expected from such a renowned material.
Contact a Trusted Borosilicate Glass Supplier Today!
As a borosilicate glass supplier, CGIM LLC serves industries across the nations with with borosilicate glass fabrication needs. CGIM LLC can fabricate borosilicate glass in all shapes, sizes and materials without compromising the quality of your order. Call us to see what one of Cincinnati’s largest and oldest industrial glass manufacturers can do for you!
Frequently Asked Questions
What fabrication processes do you offer for borosilicate glass?
Our borosilicate glass fabrication capabilities include:
- Precision cutting — straight cuts, custom shapes, and tight tolerances
- Drilling — clean holes for fittings, fasteners, and assemblies
- Edge finishing — seamed, ground, and polished edges
- Tempering and heat treatment (where applicable)
- Custom sizing — small batch and large volume runs available
What are the advantages of borosilicate glass over regular soda lime glass?
Borosilicate glass offers several key advantages for industrial use:
- Higher thermal resistance — withstands rapid temperature changes without cracking
- Low thermal expansion — coefficient of 3.3 x 10⁻⁶/°C vs. 9 for soda lime glass
- Superior chemical resistance — resists acids, alkalis, and solvents
- Greater mechanical strength — better suited for pressurized environments
- Optical clarity — excellent light transmission for sight glass applications
For industrial applications where performance and reliability are critical, borosilicate glass is almost always the preferred choice.
Can you fabricate borosilicate glass to custom sizes and shapes?
Yes. As a full-service borosilicate glass supplier, CGIM LLC specializes in custom fabrication. Whether you need a non-standard dimension, a specific edge profile, or a drilled hole pattern, we can work from your drawings, CAD files, or specifications to produce exactly what your application requires. Contact us to discuss your project.
What tolerances can you hold during borosilicate glass fabrication?
Our fabrication process is designed to hold tight tolerances required for industrial and scientific applications. Specific tolerance capabilities depend on the geometry and thickness of the glass. We recommend contacting our team directly with your drawings or specs so we can confirm achievable tolerances for your project.

