Custom Fused Quartz/Silica Glass Windows for High Pressure & Temperature

Custom Fused Quartz/Silica Glass Windows for High Pressure & Temperature

Our custom fused quartz and silica glass windows are engineered for extreme environments, combining high thermal stability with superior mechanical strength. With an operating temperature range up to 1200°C (short-term) and pressure ratings exceeding 10,000 psi (design-dependent), they are ideal for high-pressure reactors, autoclaves, combustion chambers, and deep-sea instrumentation.

Fused quartz offers exceptional ultraviolet to infrared transmission (200 nm – 2500 nm), low thermal expansion, and excellent chemical resistance. Silica glass variants provide even higher purity and thermal shock resistance. Each window is precision-machined to your specifications—diameter from 5 mm to 300 mm, thickness optimized for pressure containment, and edge finishes including ground, polished, or stepped.

Options include anti-reflective coatings, gasket grooves, and custom chamfers for leak-proof sealing. All windows undergo rigorous proof testing to ensure reliability under cyclic pressure and temperature loads. Whether you need a standard round window or a complex geometric shape, we deliver robust, optically clear solutions that maintain performance where ordinary glass fails.

Contact us for custom fabrication and fast turnaround.

Fused Quartz Glass Features:

Fused quartz glass is a special industrial glass made of silicon dioxide. It is a very good basic material. Quartz glass has a series of excellent physical and chemical properties.

1. High temperature resistance. The softening point of fused quartz glass is about 1730℃ and can be used for long time working under 1100℃~1250℃.  And working at 1450℃ in a short time.

2. Corrosion resistance. In addition to hydrofluoric acid, fused quartz glass is inert to other acids. Its acid resistance is 30 times as ceramic, 150 times as stainless steel. Especially, any other material cannot make a comparison with chemical stability of fused quartz at high temperature

3. The thermal stability is good. Thermal expansion coefficient is extremely small. And it can withstand severe temperature changes such that heating up to 1100℃ and putting it in normal temperature water will not crack.

4. The light transmittance is good. Quartz glass has good transmittance in the whole spectral band from ultraviolet to infrared. The transmittance of the visible light is above 95%. Especially in the ultraviolet spectrum band and the maximum transmittance is over 85%.

5. The electrical insulation performance is good. Resistance value of quartz glass equaling to 10000 times of ordinary glass. It is an excellent electrical insulating material and has good electrical properties even under high temperature.

As a leading China fused quartz glass supplier and manufacturer, we are providing best price as well as quality for all kinds of customized fused quartz products. We are also willing to look for long term partners who are a distributor or wholesaler specialized in fused quartz glass in local.

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Fused quartz glasses have the excellent properties for their following features:

• High working temperature
• Thermal shock resistance
• High electrical insulation
• Optical transparency
• Chemical inertness