Premium Fused Silica/Quartz Glass: Withstand extreme heat (1200℃), harsh chemicals & deliver superior optical clarity for demanding applications.
| Material | Quartz Glass |
|---|---|
| Standard | Working temperature up to 1200℃ |
| Size | diameter 10-600mm |
| Thickness | 1-100mm |
| Edge | Grind or Polish |
Our precision-engineered quartz sight glass provides a reliable, high-clarity observation solution for demanding industrial processes. Manufactured from high-purity fused quartz (99% SiO2), this sight window delivers exceptional performance in extreme thermal and chemical environments where ordinary glass would fail.
Material: quartz glass
Maxium working temperature: 1200 °C.
Working pressure: Depends on diameter and thickness.
Diameter: 10-600mm.
Thickness: 1-100mm
Shape optional：
Round/Square/Oblong
Step forms
Glasses with holes
Glasses with contour cuts
Glasses with bevels, grooves, and notches
Continuous service up to 1200°C (2012°F)
Very low coefficient of thermal expansion
Excellent thermal shock resistance
Resists most acids, alkalis, and corrosive media
Inert to virtually all chemicals except hydrofluoric acid and hot phosphates
Non-porous surface prevents contamination
92% light transmittance across visible spectrum
Minimal distortion for accurate visual monitoring
Suitable for UV and IR applications
High surface hardness and scratch resistance
Maintains integrity under pressure and vacuum
Long service life with minimal degradation
Quartz Glass Technique Specification:
| Chemical Performance | ||
| 1 | SiO2 | 99% |
| 2 | Water resistance | ISO0719 I |
| 3 | Acid resistance | ISO0195 I |
| 4 | Alkali resistance | ISO0695 I |
| Mechanical Performance | ||
| 5 | Density ρ | 2.2g/cm3 @24℃ |
| 6 | Bending Strength | 68N/mm2 |
| 7 | Tensile stress | 50N/mm2 |
| 8 | Young’s modulus | 68 Mpa |
| 9 | Poisson’s ratio | 0.17 |
| 10 | Hardness | 7 Mohs |
| 11 | Elastic Modulus | 7.5 104N/MM2 |
| Thermodynamic Performance | ||
| 12 | Thermal Expansion Coefficient (0-300℃）(20-300) | 0.55*10-6K-1 |
| 13 | Softening Point | 1730±10℃ |
| 14 | Strain Point | 1054±10℃ |
| 15 | Annealing Point | 1204±10℃ |
| 16 | Thermal Shock Resistance | 500K |
| 17 | Max Working Temperature | ≤1700℃ Short time (＜10h） |
| 18 | Max Working Temperature | ≤1200℃ Long time (＞10h） |
| Eletric Property | ||
| 19 | Electric Volume Resistivity | 1018Ωxm (at 20℃） 1010Ωxm (at 400℃） 6.3×10 6Ωxm (at 800℃） 1.3×10 5Ωxm (at 1200℃） |
| 20 | Dielectric strength | 25-40KV/mm (at 20℃） 4-5KV/mm (at 20℃） |
| 21 | Dielectric Constant εr | 3.7 (at 7.5GHz, 20℃） |
| Optical Property | ||
| 22 | Refractive Index | 1.458 @24℃ |
Light Transmission
Chemical Processing: Reactors, distillation columns, pipeline inspection
Semiconductor Manufacturing: CVD chambers, diffusion furnaces, etch equipment
Power Generation: Boiler sight ports, steam line monitoring
Pharmaceutical: Bioreactor observation, sterile process monitoring
Laboratory & Research: High-temperature apparatus, analytical instruments
Industrial Lighting: High-temperature lamp covers, specialized fixtures
Premium Material: Only optical-grade fused quartz
Quality Assurance: Each unit inspected for clarity and dimensional accuracy
Technical Support: Engineering assistance for application-specific challenges
Competitive Pricing: Direct manufacturer pricing with volume discounts
Fast Lead Times: 3-7 days
Q: What’s the difference between quartz and borosilicate sight glasses?
A: Quartz offers higher temperature resistance (1100°C vs. 500°C) and superior UV transmission compared to borosilicate.
Q: Can you provide sight glasses with pressure ratings?
A: Yes, we engineer sight glasses for specific pressure requirements. Contact us with your operating conditions.
Q: How do I install and maintain quartz sight glass?
A: We provide detailed installation guides. Avoid mechanical impact and contact with HF acid. Regular visual inspection is recommended.
Q: Do you offer custom shapes and sizes?
A: Yes, we specialize in custom designs including different shapes such as round, square, oblong for size range 10-600mm, thickness 1-100mm.
Application-specific recommendations
Custom design consultation
Competitive pricing
Technical drawings and specifications
📞Phone: +86 152 0192 7179
📧 Email: info@wtglass.com
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