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High Purity Fused Quartz Glass Windows & Discs
High-purity fused quartz glass manufactured for extreme temperature, optical, semiconductor, vacuum, and industrial sight glass applications. Available in custom discs, windows, tubes, plates, and precision-machined components.
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Technical data
Product Overview
High Purity Fused Quartz Glass Manufacturer
Fused Quartz Glass is a high-performance material produced from ultra-pure silica (SiO₂), offering exceptional optical transmission, outstanding thermal stability, excellent chemical resistance, and extremely low thermal expansion.
Compared with conventional borosilicate glass, fused quartz glass withstands significantly higher temperatures and provides superior UV, visible, and infrared light transmission. It is widely used in semiconductor equipment, vacuum systems, laboratory instruments, laser systems, optical devices, chemical processing plants, and industrial sight glass applications.
I-LUMISTAR manufactures custom fused quartz glass components including discs, windows, plates, rings, tubes, sight glasses, and precision-machined parts according to customer drawings and specifications.
High Purity Fused Quartz Glass— Technical Data
| Parameter | Specification |
|---|---|
| Material | Fused Quartz Glass |
| SiO₂ Content | ≥ 99.99% |
| Density | 2.20 g/cm³ |
| Softening Point | Approx. 1730°C |
| Continuous Operating Temperature | Up to 1100°C |
| Short-Term Temperature Resistance | Up to 1200°C+ |
| Thermal Expansion Coefficient | 5.5 × 10⁻⁷ /K |
| Light Transmission | UV / Visible / IR |
| Surface Finish | Ground, Polished, Optical Polished |
| Available Shapes | Disc, Plate, Ring, Window, Tube |
| Custom Processing | CNC Machining, Drilling, Slotting |
Three different grades
| Characteristics | JGS1 | JGS2 | JGS3 |
|---|---|---|---|
| Purity | 99.99% or more | 99.99% or more | Lower, contains more impurities |
| Transmittance band | 185nm–2500nm (ultraviolet to near infrared) | 250nm–2500nm (visible light to near infrared) | 260nm–3500nm (visible light to infrared) |
| Transmittance | Very high | Relatively high | Relatively low |
| Bubbles/impurities | Almost no | little | More |
| Application | High Precision UV Optics | General optical devices, laboratory utensils | Infrared optical devices, industrial |
Available Products
Quartz Sight Glass
High-temperature transparent windows for pressure vessels and reactors.
Quartz Glass Discs
Precision-cut circular quartz glass components.
Quartz Viewing Windows
Optical-grade windows for vacuum and analytical systems.
Quartz Glass Tubes
Used in laboratory, furnace, and semiconductor applications.
Quartz Plates
Flat polished quartz substrates and industrial panels.
Custom Quartz Components
Manufactured according to customer drawings.
KEY FEATURES
Ultra-High Temperature Resistance
Continuous operating temperatures up to 1100°C and short-term exposure above 1200°C.
Excellent Optical Transmission
High transmission from UV through visible to infrared wavelengths.
Extremely Low Thermal Expansion
Minimizes thermal stress and improves dimensional stability.
Superior Chemical Resistance
Resistant to most acids, solvents, and corrosive environments.
High Purity Material
SiO₂ content greater than 99.99%.
Custom Manufacturing
Available in custom diameters, thicknesses, shapes, holes, slots, and CNC-machined designs.
Custom Manufacturing Service
We provide tailor-made solutions according to drawings or technical requirements.
- Custom diameter
- Custom thickness
- Special pressure design
- Edge polishing
- Optical finishing
- OEM / ODM support
- Custom packaging
TYPICAL APPLICATIONS
- Industrial Sight Glass Systems
- Semiconductor Industry
- Optical Equipment
- Vacuum Technology
- Chemical Processing
- Laboratory Instruments
- Solar & Photovoltaic Industry
FAQ
A: Fused quartz glass is a high-purity silica glass manufactured by melting natural quartz or synthetic silica at extremely high temperatures.
A: Fused quartz can continuously operate at temperatures up to approximately 1100°C and withstand short-term exposure above 1200°C.
A: Quartz glass offers significantly higher temperature resistance, lower thermal expansion, and better UV transmission than borosilicate glass.
A: Yes. Quartz glass is highly resistant to most acids and corrosive chemicals, except hydrofluoric acid and hot concentrated alkalis.
A: Yes. We produce custom quartz discs, windows, rings, tubes, plates, and complex machined components based on drawings.
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