Available in different diameters, thicknesses, and customized shapes, our borosilicate glass discs support precision processing based on customer drawings and requirements. As an experienced glass manufacturer, Vatti Glass delivers reliable solutions for industrial equipment manufacturers, distributors, and engineering projects worldwide.
Borosilicate Glass Disc is manufactured from high quality borosilicate glass 3.3 material, featuring excellent thermal shock resistance, low thermal expansion, and outstanding chemical stability. With superior heat resistance and optical clarity, it is widely used for industrial sight glass, gauge glass, optical windows, and high-temperature observation applications.
Vatti Glass provides customized borosilicate glass discs in different diameters, thicknesses, and shapes according to customer requirements. With advanced glass processing technology and strict quality control, we supply reliable glass solutions for industrial equipment manufacturers, distributors, and engineering projects worldwide.
Excellent Thermal Shock Resistance
Borosilicate Glass Disc has a low coefficient of thermal expansion of 3.3×10⁻⁶/℃, allowing it to withstand rapid temperature changes and reduce the risk of thermal cracking during high-temperature applications.
High Temperature Performance
With a maximum working temperature of up to 550℃, the glass disc maintains stable performance in demanding environments, making it suitable for heat-resistant windows, inspection ports, and industrial equipment.
High Optical Transparency
The material provides excellent light transmission of up to 92% (thickness ≤4mm), ensuring clear observation and accurate visual inspection in optical and industrial applications.
Customized Processing
Vatti Glass supports customized sizes, thicknesses, edge processing, and shapes, including round discs, rectangular pieces, and special-shaped glass components to meet different application requirements.
Strong Chemical Stability
Borosilicate glass offers excellent resistance to corrosion and chemical attack, ensuring long service life in laboratory, industrial, and mechanical applications.
| Item | Parameter |
| Product Name | Borosilicate Glass Disc |
| Material | Borosilicate Glass 3.3 |
| Shape | Round Disc / Customized Shape |
| Thickness | 2-30mm |
| Size | Customized |
| Maximum Working Temperature | ≤550℃ |
| Coefficient of Expansion (20-300℃) | 3.3±0.1×10⁻⁶ |
| Softening Point | 820±10℃ |
| Thermal Shock Resistance | ≥125K |
| Refractive Index (nd) | 1.47384 |
| Light Transmission | 92% (≤4mm), 91% (≥5mm) |
Borosilicate Glass Disc is widely used in industries requiring excellent thermal resistance, optical clarity, chemical durability, and dimensional stability. With reliable performance under high-temperature and demanding operating conditions, it is suitable for industrial equipment, optical systems, laboratory instruments, and customized glass applications.
Industrial Sight Glass
Borosilicate Glass Disc is commonly used as sight glass windows in pressure vessels, pipelines, boilers, reactors, and processing equipment. Its excellent thermal shock resistance and high transparency allow operators to monitor internal conditions safely and clearly.
Level Gauge Glass
Used for liquid level indicators and gauge systems, borosilicate glass discs provide stable performance under temperature and pressure variations. They are suitable for boilers, tanks, and industrial measurement equipment requiring reliable visual inspection.
Optical Windows
With excellent light transmission and stable optical properties, borosilicate glass discs are applied in optical instruments, sensors, and protective window components where clarity and durability are required.
Laboratory Equipment
Due to its strong chemical resistance and thermal stability, borosilicate glass discs are widely used in laboratory instruments, chemical equipment, and research devices exposed to heat or corrosive environments.
Industrial Inspection Windows
Borosilicate glass discs provide clear observation solutions for high-temperature furnaces, processing systems, and industrial machinery, helping operators monitor equipment operation safely.
Chemical & Process Equipment
The excellent corrosion resistance of borosilicate glass makes it suitable for chemical processing equipment and systems requiring long-term exposure to demanding environments.
Vatti Glass provides comprehensive processing services to meet different industrial requirements.
Cutting
Professional cutting technology ensures accurate dimensions and consistent product quality.
Edge Processing
Available edge treatments include grinding, polishing, and customized finishing to improve safety and installation compatibility.
Drilling & Machining
Precision drilling and machining services are available for glass components requiring special installation structures.
Quality Inspection
Each product is inspected according to customer specifications to ensure thickness accuracy, surface quality, and dimensional consistency.
As a professional borosilicate glass disc manufacturer, Vatti Glass provides customized processing services based on customer drawings and specifications.
Available customization options include:
Customized diameter and thickness
Round, square, rectangular, and special shapes
Edge grinding and polishing
Hole drilling and precision processing
Surface treatment according to application requirements
Our manufacturing process follows strict quality management standards to ensure stable dimensions, optical performance, and product reliability.
Laboratory Equipment
Used for laboratory devices and chemical equipment due to excellent corrosion resistance and thermal stability.
Industrial Inspection Windows
Provides clear visibility for equipment monitoring in high-temperature operating environments.
When selecting a borosilicate glass disc, several factors should be considered:
Operating Temperature
Choose suitable glass specifications according to the working temperature range.
Thickness Requirement
Different applications require different thicknesses depending on pressure, installation structure, and safety requirements.
Shape and Size
Customized dimensions should match the equipment design and installation conditions.
Surface Processing
Edge finishing and additional processing should be selected according to application requirements.
Vatti Glass is committed to providing reliable borosilicate glass discs with consistent quality, stable performance, and strict production control. With independent import and export rights and years of experience in international glass supply, we serve customers from different industries worldwide, including industrial equipment manufacturers, distributors, and engineering companies.
From raw material selection to final inspection, every production stage is carefully controlled to ensure that each borosilicate glass disc meets customer specifications for dimensions, optical performance, thermal stability, and durability.
Our quality assurance process includes:
Strict Raw Material Selection
We select high-quality borosilicate glass 3.3 materials with stable chemical composition and reliable performance to ensure excellent thermal resistance, low expansion characteristics, and long service life.
Accurate Dimension & Thickness Control
Advanced processing equipment and strict inspection procedures are applied to control glass thickness, diameter, shape, and dimensional accuracy, ensuring compatibility with different equipment and installation requirements.
Professional Processing & Surface Inspection
Each glass disc undergoes professional processing, including cutting, edge grinding, polishing, and customized machining. Surface quality is carefully inspected to ensure clear visibility and reliable application performance.
Performance Testing & Quality Inspection
Vatti Glass performs inspections on key product characteristics, including thermal resistance, optical clarity, appearance quality, and processing accuracy, helping ensure stable product performance in demanding environments.
Secure Packaging for Global Shipping
Considering the fragile nature of glass products, we use protective packaging solutions to reduce the risk of damage during storage and international transportation.
Reliable Export Experience
With extensive experience supplying glass products to overseas markets, Vatti Glass understands international packaging, documentation, and delivery requirements, providing efficient service for global customers.
Professional Borosilicate Glass Manufacturer
With extensive experience in glass manufacturing, Vatti Glass provides reliable borosilicate glass disc solutions for industrial equipment manufacturers, distributors, and engineering projects worldwide.
Customized Glass Solutions
We support customized production based on customer drawings, specifications, and application requirements, including different sizes, thicknesses, shapes, and processing options.
Advanced Processing Capability
Equipped with professional glass processing technology, we provide cutting, edge grinding, polishing, drilling, and other customized services to meet various industrial applications.
Stable Quality & Factory Direct Supply
Strict quality control throughout production ensures consistent performance, accurate dimensions, and reliable product quality with competitive factory-direct supply.
Global Export Experience & Service Support
With independent import and export rights and years of international supply experience, Vatti Glass provides efficient communication, secure packaging, and reliable delivery support for overseas customers.
1. What is a borosilicate glass disc used for?
Borosilicate Glass Disc is widely used for industrial sight glass, level gauge glass, optical windows, laboratory equipment, and inspection windows. It provides excellent thermal shock resistance, high temperature stability, and optical clarity for demanding applications.
2. What shapes and sizes of borosilicate glass discs can you supply?
Vatti Glass supplies borosilicate glass discs in round, square, rectangular, and customized shapes. Diameter, thickness, and dimensions can be produced according to customer drawings, samples, or specific application requirements.
3. Can you manufacture customized borosilicate glass discs?
Yes. We provide custom borosilicate glass disc manufacturing services, including customized sizes, thicknesses, shapes, and processing options to meet different industrial equipment and project requirements.
4. What thicknesses are available for borosilicate glass discs?
Our borosilicate glass discs are available in thicknesses from 2mm to 30mm. Customized thickness options can also be provided according to application conditions, installation requirements, and customer specifications.
5. Can borosilicate glass discs be used for sight glass applications?
Yes. Borosilicate glass discs are suitable for sight glass applications in boilers, pressure vessels, pipelines, and industrial equipment due to their excellent thermal resistance, transparency, and chemical stability.
6. What processing services do you provide for borosilicate glass discs?
Vatti Glass provides professional processing services including cutting, edge grinding, polishing, drilling, and customized shape processing to ensure accurate dimensions and reliable installation performance.
7. How is borosilicate glass different from ordinary glass?
Borosilicate glass offers lower thermal expansion, better thermal shock resistance, higher temperature stability, and stronger chemical durability compared with ordinary glass, making it ideal for industrial applications.
8. What information is needed for a customized quotation?
Customers can provide details such as size, thickness, shape, quantity, application, and processing requirements. Drawings or samples are recommended for customized borosilicate glass disc projects.