High-precision fused silica sight glass for high-temperature, optical, and industrial inspection applications.
Supports custom sizes, drilling, and OEM machining.
Custom Quartz Glass Sight Glass is a high-precision optical and industrial component manufactured from high-purity fused silica (SiO₂). It is specifically designed for high-temperature environments and optical transmission systems using Quartz Glass Sight Glass components.
With excellent thermal stability, UV–IR optical transmission, and strong chemical resistance, it performs reliably under extreme operating conditions.
This product supports custom step drilling and precision machining, making it suitable for complex engineering and OEM applications.
High Thermal Resistance: suitable for long-term use at 1100–1200°C in industrial and high-temperature observation systems
High Optical Transmission: excellent UV–IR transparency for optical inspection and viewing applications
High Purity Fused Silica: up to 99.99% SiO₂ ensuring stable performance in precision environments
Strong Chemical Resistance: stable in acidic, corrosive, and harsh industrial conditions
Excellent Electrical Insulation: suitable for high-voltage and electronic systems
High Thermal Shock Resistance: low thermal expansion reduces cracking risk under rapid temperature changes
| Property | Value |
| Material | Fused Silica (SiO₂) |
| Purity | Up to 99.99% |
| Density | 2.2 g/cm³ |
| Hardness | 5.5–6 Mohs |
| Softening Point | 1750°C |
| Working Temperature | 1100–1200°C |
| Max Short-Term | 1400°C |
| Thermal Expansion | 5.5×10⁻⁷ /°C |
| PPM Grade | 10 / 20 / 100 |
Thickness: 0.5mm – 100mm for industrial and optical sight glass applications
Shape: Round / Square / Rectangular / Custom designs based on drawings
Surface Finish: Polished / Ground / Optical grade surface for high-transparency applications
Color: Transparent / Colorless for optical inspection systems
Machining Capability: Precision cutting, drilling, and step drilling for custom quartz glass sight glass components
We provide full OEM and ODM manufacturing services for custom quartz glass sight glass components based on drawings, samples, or technical requirements.
Our engineering capabilities ensure high precision, optical performance, and stable quality for industrial sight glass and optical inspection applications.
Manufacturing Capabilities Include:
Precision CNC cutting and shaping for quartz glass sight glass components
Step drilling and complex hole machining for industrial sight glass windows
High-precision edge polishing for optical-grade surface finish
Tight thickness and dimensional tolerance control for sight glass applications
Full OEM/ODM production support for custom quartz glass sight glass designs
Prototype development and small-batch production for project validation
Custom Quartz Glass Sight Glass components are widely used in high-temperature, optical, and precision industrial systems for observation and inspection purposes.
Typical Applications Include:
Quartz glass sight glass for semiconductor manufacturing equipment
Optical quartz sight glass for laboratory observation systems
High-transparency sight glass for optical transmission and imaging systems
High-temperature quartz sight glass for furnace inspection windows
Chemical-resistant sight glass for industrial processing equipment
Aerospace-grade quartz glass sight windows for inspection systems
To ensure safe delivery of custom quartz glass sight glass components, we use professional export packaging designed for fragile and precision optical glass products.
Packaging & Logistics Solutions:
Seaworthy wooden crate packaging for international shipment safety
EPE foam shock protection to prevent impact damage
Protective paper layer separation to avoid surface scratches
Flexible shipping options: DHL / FedEx / Air freight / Sea freight
FOB Qingdao Port available for bulk industrial orders
We implement strict quality control standards for custom quartz glass sight glass components to ensure high precision, optical performance, and reliable industrial application.
Inspection & Testing Standards:
Dimensional accuracy inspection for precision quartz glass sight glass components
Surface quality inspection including bubble-free and defect-free evaluation
Controlled PPM impurity testing for optical-grade fused silica materials
Thermal resistance testing for high-temperature sight glass applications
Optical transmission verification for inspection and optical systems
Q1: What is a quartz glass sight glass?
A: A quartz glass sight glass is a high-transparency inspection window made from fused silica, used in high-temperature, optical, and industrial observation systems.
Q2: Can quartz glass sight glass be customized?
A: Yes, we provide full OEM/ODM customization including size, thickness, shape, and step drilling based on drawings or samples.
Q3: What is the working temperature of quartz glass sight glass?
A: It can operate continuously at 1100–1200°C and withstand short-term exposure up to 1400°C in industrial environments.
Q4: What industries use quartz glass sight glass?
A: It is widely used in semiconductor equipment, laboratory systems, optical inspection, aerospace, and high-temperature industrial applications.
