1200°C High Temp Resistant
High Transmittance
Acid/Alkali Resistant
Complete Specifications
Aoxin Quartz is a premier manufacturer of custom Quartz Sight Glasses and Sight Windows, engineered for reliable visual process monitoring in demanding industrial and scientific environments. Fabricated from high-purity fused quartz (4N Purity, SiO2 > 99.99%), our sight glasses offer exceptional optical clarity with light transmittance exceeding 94%, combined with superior resistance to high temperatures (up to 1200°C), thermal shock, and chemical corrosion. We specialize in providing both standard circular sight glasses and complex designs like ‘Step Windows,’ all precision-machined to ensure high flatness, parallelism, and freedom from internal defects. Full customization is available to meet your specific operational pressures, temperatures, and dimensional requirements.
- Product Name : quartz sight glass
- Material : 99.99 % Purity Quartz
- Work Temperature ：~1200℃
- Soften point : ~1730℃
- Hardness : 5.5 – 6.5 Mohs’ Scale 570 KHN 100
- Tensile Strength : 4.8×107 Pa (N/mm2) (7000 psi)
- Compression Strength : >1.1×109 Pa (160,000 psi)
| Diameter (mm) | thickness (mm) | Diameter (in) | thickness (in) |
|
|---|---|---|---|---|
| 18mm | 5mm | 0.71″ | 0.20″ | |
| 20mm | 5mm | 0.79″ | 0.20″ | |
| 22mm | 5mm | 0.87″ | 0.20″ | |
| 24mm | 5mm | 0.94″ | 0.20″ | |
| 25mm | 5mm | 0.98″ | 0.20″ | |
| 30mm | 5mm | 1.18″ | 0.20″ | |
| 35mm | 5mm | 1.38″ | 0.20″ | |
| 40mm | 5mm | 1.57″ | 0.20″ | |
| 45mm | 5mm | 1.77″ | 0.20″ | |
| 45mm | 8mm | 1.77″ | 0.31″ | |
| 50mm | 5mm | 1.97″ | 0.20″ | |
| 55mm | 5mm | 2.17″ | 0.20″ | |
| 57mm | 5mm | 2.24″ | 0.20″ | |
| 60mm | 5mm | 2.36″ | 0.20″ | |
| 65mm | 5mm | 2.56″ | 0.20″ | |
| 70mm | 5mm | 2.76″ | 0.20″ | |
| 72mm | 5mm | 2.83″ | 0.20″ | |
| 80mm | 5mm | 3.15″ | 0.20″ | |
| 80mm | 10mm | 3.15″ | 0.39″ | |
| 85mm | 5mm | 3.35″ | 0.20″ | |
| 85mm | 6mm | 3.35″ | 0.24″ | |
| 85mm | 8mm | 3.35″ | 0.31″ | |
| 100mm | 6mm | 3.94″ | 0.24″ | |
| 100mm | 8mm | 3.94″ | 0.31″ | |
| 110mm | 8mm | 4.33″ | 0.31″ | |
| 115mm | 5mm | 4.53″ | 0.20″ | |
| 136mm | 8mm | 5.35″ | 0.31″ | |
| 149mm | 8mm | 5.87″ | 0.31″ | |
| 180mm | 6mm | 7.09″ | 0.24″ | |
| 200mm | 6mm | 7.87″ | 0.24″ | |
| 220mm | 6mm | 8.66″ | 0.24″ |
Features
- Exceptional Optical Clarity: With light transmittance over 94% and surfaces free of bubbles and striations, ensuring clear and unobstructed viewing of internal processes.
- Extreme Environment Tolerance: Engineered from 4N purity quartz to withstand high temperatures (up to 1200°C), significant thermal shock, and corrosive chemical environments (acid and alkali resistant).
- Precision Engineering: Manufactured with high flatness and parallelism, and options like ‘Step Windows’ for specific pressure or sealing applications. Cold polished finishes ensure optimal transparency.
- High Material Purity (SiO2 > 99.99%): Minimizes contamination and ensures consistent optical properties and material integrity under stress.
- Low Thermal Expansion (CTE): Provides dimensional stability across a wide temperature range, crucial for maintaining seals in sight glass assemblies.
- Full Customization & OEM/ODM: We can tailor sight glasses to your exact specifications including dimensions (diameter, thickness), shape (discs, rings, step windows), pressure ratings (HT/HP options), and surface treatments.
- Certified Quality: Produced in our 9000㎡ facility with 15 years of experience, backed by CE, ISO, RoHS, and SGS certifications for guaranteed performance and reliability.