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Custom High-Temperature Resistant Quartz Glass Rings - China Suppliers & Factory for Insulation Solutions

Quartz rings, manufactured by top suppliers in China, are high-purity components crafted from fused silica, known for their exceptional thermal stability and high-temperature resistance up to 1100°C. These rings have low thermal expansion and provide outstanding light transmittance, making them ideal for various applications. Their strong acid and corrosion resistance, along with superior electrical insulation properties, make them reliable in challenging environments. With precise dimensional accuracy and excellent mechanical strength, these quartz rings are extensively utilized in industries such as semiconductor manufacturing, high-temperature furnaces, optical devices, laboratory equipment, and photovoltaic sectors. As a key product from a leading factory, they are essential as sealing rings, insulation parts, and structural components for demanding applications

Product Description

Material & Quality

Made from 99.99% high-purity fused silica, our large-diameter quartz tube is free of impurities, ensuring minimal thermal expansion and maximum resistance to thermal shock (can withstand rapid temperature changes from -20℃ to 1200℃). It is non-toxic, non-porous, and resistant to most acids (except hydrofluoric acid) and alkaline solutions, making it suitable for corrosive chemical processing.

Core Advantages

Superior thermal stability: Operates continuously at 1100℃, short-term use up to 1450℃
Excellent mechanical strength: High compressive strength and impact resistance, cracking during installation and use
Customization support: Cut-to-length, flanged ends, and drilled holes available per customer drawings
Long service life: Resists aging and oxidation even under prolonged high-temperature exposure

Key Application Fields of Large-Diameter Quartz Tubes

Large-diameter quartz tubes are essential components in various high-end industries, thanks to their excellent thermal stability, chemical inertness and high light transmittance.

Semiconductor Industry

They are widely used in diffusion furnaces, oxidation furnaces and ion implantation equipment for wafer processing. The high purity and corrosion resistance of quartz tubes can ensure no pollution to semiconductor materials during high-temperature processes.
Solar Energy Sector

Applied to the production line of photovoltaic cells and silicon wafers, they serve as the core components of high-temperature sintering and coating equipment, helping to improve the conversion efficiency of solar cells.
High-Temperature Heat Treatment & Metallurgy

Used as furnace linings and heating chambers in annealing furnaces, quenching furnaces and sintering furnaces, they can withstand continuous high-temperature operation up to 1100℃ and resist thermal shock.
Laboratory & Scientific Research

Employed in high-temperature chemical reactors, vacuum tubes and chemical vapor deposition (CVD) systems, suitable for harsh experimental environments such as strong acid corrosion and high-temperature pyrolysis.
Optical Fiber & Optoelectronics Industry

Serve as protective sleeves and drawing molds in optical fiber preform production, ensuring the purity and uniformity of optical fiber materials during the high-temperature drawing process.
Environmental Protection & Waste Treatment

Used in high-temperature waste gas incinerators and hazardous waste treatment equipment, taking advantage of their high-temperature resistance and chemical stability to decompose harmful substances.

Product Specifications

Product Details

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Standard Dimensional Specifications & Tolerances

💡 All dimensions are in millimeters (mm). Tolerances apply to outer diameter, inner diameter, and height respectively. Custom sizes are available upon request.

Outer Diameter	Inner Diameter	Height	Outer Dia. Tolerance	Inner Dia. Tolerance	Height Tolerance
20	10	5～20	±0.2	±0.2	±0.2
30	15 / 20	5～30	±0.2	±0.2	±0.2
40	20 / 30	5～30	±0.2	±0.2	±0.2
50	30 / 40	5～50	±0.3	±0.3	±0.3
60	40 / 50	5～50	±0.3	±0.3	±0.3
80	50 / 60 / 70	10～60	±0.3	±0.3	±0.3
100	60 / 80 / 90	10～80	±0.5	±0.5	±0.5
120	80 / 100	10～80	±0.5	±0.5	±0.5
150	100 / 120	10～100	±0.8	±0.8	±0.5
200	150 / 180	10～120	±1.0	±1.0	±0.8
250	200 / 220	10～120	±1.2	±1.2	±0.8
300	250 / 280	10～150	±1.5	±1.5	±1.0

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Frequently Asked Questions

Q What do the outer diameter and inner diameter values in the table represent?

A The outer diameter refers to the total outside measurement of the component, while the inner diameter refers to the bore or hole size. Multiple inner diameter options (e.g., 15/20) indicate that different bore sizes are available for the same outer diameter.

Q Why do tolerance values increase as the outer diameter gets larger?

A Larger components naturally involve greater dimensional variability during manufacturing. As the outer diameter increases from 20mm to 300mm, tolerances are adjusted from ±0.2mm to ±1.5mm to reflect achievable precision at each size range while maintaining structural integrity.

Q Can I request a custom height outside the listed range?

A Yes. The height ranges shown in the table represent standard production options. Custom heights beyond the listed ranges can typically be accommodated — please contact our technical team with your specific requirements for a tailored solution.

Q Are tighter tolerances available for precision applications?

A The tolerances listed are standard manufacturing tolerances. For applications requiring tighter precision, special machining or grinding processes may be applied. Please specify your tolerance requirements when placing an inquiry so we can advise on feasibility and cost.

Q Are all dimensions in the table measured in millimeters?

A Yes, all dimensional values — including outer diameter, inner diameter, height, and their corresponding tolerances — are expressed in millimeters (mm). If you require dimensions in inches or other units, please let us know and we can provide converted specifications.

Q What is the significance of the height tolerance being different from the diameter tolerance for larger sizes?

A For larger outer diameters (150mm and above), the height tolerance is intentionally tighter than the diameter tolerance. This is because height precision is often more critical for stacking, assembly fit, and load-bearing performance, and it is generally easier to control height accuracy during machining than radial dimensions.

Packaging and Shipping

Why Choose Southeast Quartz?

Southeast Quartz relies on the superior high-quality quartz ore resources in Donghai County, deeply engages in the deep processing of quartz glass, and has become a core supplier to global customers. All products undergo multiple tests such as helium mass spectrometry leak detection, pressure resistance test, and purity test before leaving the factory to ensure stable performance, no impurities, and no leakage.