Quartz Furnace Tube
Oversized Quartz Tube
Quartz Boat
Quartz Plate
Quartz Lamp Holder
Quartz Rod
Quartz Ring
Customized Quartz Products
Plasma-Fused Quartz Ingots
Quartz Irregular Shaped Sheets
Quartz Crystal Singing Pyramid
Half-white Coated Short-wave Infrared Quartz Heating Lamp
Leading China Quartz Rings Manufacturer — Southeast Quartz
Lianyungang Southeast Quartz Products Co., Ltd., established in 2015, is located in Donghai County, Lianyungang City, Jiangsu Province—China's national base for the silicon material industry. As a premier manufacturer integrating R&D, precision design, automated production, sales, and global export trade, Southeast Quartz leverages the world-renowned high-purity natural quartz deposits of Donghai.
We specialize in the deep processing of high-purity fused silica and synthetic quartz glass. Through years of technological refinement, we have evolved into a critical tier-1 consumables supplier for semiconductor wafer fabrication, solar photovoltaics (PV), chemical instrumentation, laboratory research, and high-spec industrial lighting.
High-Purity Custom Quartz Rings & Insulation Components
Engineered to endure ultra-high temperatures, aggressive chemical plasmas, and tight mechanical tolerances in semiconductor wafer processing and industrial thermal chambers.
High-Purity Fused Silica
Manufactured from ultra-refined silica powder (SiO2 ≥ 99.999%). Extremely low metallic impurity content (Fe, Cu, Ni < 0.1 ppm) prevents ionic contamination in cleanroom semiconductor process chambers and epitaxial furnaces.
Explore Insulation Rings →Thermal Shock & Stability
Boasting a negligible coefficient of thermal expansion (5.5 × 10^-7 /℃), our quartz rings withstand direct flame exposure up to 1200℃ continuously and 1450℃ intermittently without deformation, devitrification, or cracking.
Thermal Resistance Specs →Plasma & Acid Resistance
Exceptional inertness against concentrated corrosive acids (hydrofluoric acid excepted) and fluorine-based reactive etching plasmas. Provides prolonged service lifetime as protective focus rings, clamp rings, and sealing spacers.
Custom Dimension Request →Technical Properties Comparison
| Property Parameter | Semiconductor Grade Fused Quartz | Optical Grade Synthetic Quartz | Standard Industrial Quartz |
|---|---|---|---|
| SiO2 Purity | ≥ 99.999% (5N) | ≥ 99.9999% (6N) | ≥ 99.99% (4N) |
| Working Temperature (Continuous) | 1150℃ - 1200℃ | 1200℃ - 1250℃ | 1050℃ - 1100℃ |
| Thermal Expansion (0-300℃) | 5.5 × 10^-7 cm/cm℃ | 5.2 × 10^-7 cm/cm℃ | 5.8 × 10^-7 cm/cm℃ |
| Dielectric Strength (20℃) | 25 - 40 kV/mm | > 40 kV/mm | 20 - 30 kV/mm |
| Surface Finish (Polishing / Grinding) | Fire-polished / Ra < 0.2 μm | Optical Double-Sided Ra < 0.05 μm | Fine Ground Ra 0.8 - 1.6 μm |
| Standard Applications | Etch Rings, Focus Rings, Diffusion Tube Collars | UV Lithography, Laser Windows, Precision Optics | Furnace Flanges, Sight Glasses, Heater Sleeves |
Engineered for Demanding Industrial Environments
Our custom quartz rings and fused silica components serve mission-critical roles across high-tech manufacturing, thermal processing, and scientific research.
Semiconductor Wafer Processing
Crucial components in dry plasma etching, CVD, and diffusion furnaces. Custom quartz focus rings, edge rings, and wafer clamp rings ensure uniform plasma distribution and protect chamber hardware from particle build-up.
View Semi Applications →Photovoltaic Cell Manufacturing
Used as high-temperature thermal barriers, quartz boat supports, and furnace tube insulation rings in monocrystalline and polycrystalline silicon solar cell production lines (TOPCon, HJT, and PERC).
Explore PV Quartz Boats →High-Temp Vacuum & Sintering
Serving as heat-shield spacers, quartz sight windows, and burner rings in chemical vapor deposition, vacuum metallurgy furnaces, and chlorine-hydrogen burner systems.
Burner Applications →Related High-Purity Quartz Consumables & Components
Manufactured using first-grade Donghai quartz ore with strict CNC machining, fire polishing, and ultrasonic cleanroom packaging.
Custom Transparent Quartz Glass Ring
High temperature resistant quartz insulation rings tailored to exact ID, OD, and thickness specs.
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Custom Size Quartz Furnace Tube
Thermal shock resistant furnace tubes designed for laboratory and industrial tube furnace operations.
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Quartz Bell Jar with Thermal Stability
Heavy-wall fused quartz bell jars for semiconductor deposition, PECVD, and vacuum chamber environments.
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Premium High-Temp Quartz Boat
Precision-slotted quartz boats for silicon wafer loading during high-temperature diffusion and oxidation.
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Oversized Fused Quartz Tube
Large diameter fused quartz tubes engineered for industrial diffusion and semiconductor batch processing.
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Fused Silica Quartz Plate
Polished heat-resistant quartz plates and discs for optical windows, laser shields, and sight glasses.
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High Purity Quartz Rod / Fused Silica
Precision drawn quartz rods for semiconductor wafer guides, fiber optic preforms, and lab stirrers.
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Customized Quartz Products
Custom fabricated quartz glass labware, beakers, distillation units, and bespoke components.
View Product DetailsPrecision Product Processing Display
From raw ingot cutting to flame thermal shaping, precision CNC edge grinding, fire-polishing, and annealing stress-relief.
Factory Display & Production Capability
Modern standardized workshops, computerized quartz glass lathes, and specialized high-vacuum annealing furnaces located in Donghai County.
Customer Supreme
Adhering to the philosophy of "Quality First, Customer Supreme, Innovation-Driven, Integrity Management", Southeast Quartz operates a comprehensive, customer-centric response framework from rapid blueprint evaluation to prototype delivery.
Rigorous Quality Control
Every quartz ring and component undergoes multi-tier testing: helium mass spectrometry leak detection, hydrostatic pressure resistance, polariscope stress analysis, and GDMS trace element purity verification.
Flexible Customization
We accommodate customized outer diameters, inner diameters, thickness profiles, chamfers, stepped grooves, notch cuts, and optical-grade laser engraving according to specific engineering drawings (CAD / STEP).
Trusted by Customers Worldwide: Southeast Quartz
With reliable product quality, efficient batch production delivery, and dedicated after-sales technical support, products from Lianyungang Southeast Quartz Products Co., Ltd. are extensively used across all Chinese domestic industrial hubs and exported to over 45 countries throughout Europe, North America, Southeast Asia, East Asia, and the Middle East.
Moving forward, Southeast Quartz will continuously invest in precision thermal processing equipment, synthetic fused silica development, and automated CNC glass milling to empower global high-tech industries.
Certificate Display & Quality Approvals
Our complete manufacturing pipeline is accredited to international standards, ensuring zero bubble defects, extreme purity, and chemical compliance.
ISO 9001 Quality System
EU REACH Certified
RoHS Compliant
SGS Verified Purity
National Test Report
Frequently Asked Questions About Custom Quartz Rings
Key technical insights to guide your material selection, dimensional customization, and procurement decisions.
What makes fused quartz the ideal material for high-temperature insulation rings?
Fused quartz consists almost entirely of pure silicon dioxide (>99.99% SiO2). It possesses an extraordinarily low thermal expansion coefficient (5.5 × 10^-7 /℃), exceptional thermal shock resistance, strong electrical insulation even at high temperatures (>1000℃), and high chemical inertness, making it vastly superior to ceramics, alumina, and standard borosilicate glasses in vacuum and corrosive plasma chambers.
What machining tolerances can Southeast Quartz achieve for custom quartz rings?
Using state-of-the-art 4-axis and 5-axis CNC grinding machines, diamond core drills, and high-precision laser profiling, we consistently deliver dimensional tolerances as tight as ±0.01 mm for critical semiconductor focus rings, flatness up to 1/4 lambda, and surface roughness Ra down to < 0.2 μm for optical or fire-polished sealing edges.
Can you customize opaque, frosted, or clear quartz rings with specialized notches?
Yes. We offer transparent (clear) fused quartz, opaque (milky white) quartz rings, and dual-surface frosted finishes. We readily process custom features including wafer orientation flat alignment notches, O-ring groove channels, stepped flanges, laser-engraved serial codes, and counter-bored mounting holes according to your CAD drawings.
How does Southeast Quartz ensure bubble-free and crack-free export shipments?
Each manufactured quartz ring undergoes strict polariscope stress analysis and helium mass spectrometry leak testing. Cleaned items are packaged in Class 1000 cleanroom environments using multi-layer anti-static vacuum sealing, custom-molded high-density shock-absorbing EPE foam, and heavy-duty export-grade wooden crating to guarantee zero damage during international sea or air freight.