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 Global Supplier of Custom Fused Quartz Rings
As industrial thermal and chemical environments grow increasingly aggressive, semiconductor fabricators, chemical processing plants, and optical instrument developers demand components that combine total thermal stability, high chemical inertness, and exceptional dielectric strength. As a dedicated quartz rings supplier, Southeast Quartz specializes in the customized synthesis and precision diamond machining of fused silica rings for mission-critical applications.
Our custom fused quartz rings are manufactured from high-purity natural quartz crystals and synthetic quartz precursors, yielding a silicon dioxide (SiO2) purity exceeding 99.99%. With a near-zero coefficient of thermal expansion (5.5 × 10⁻⁷ /℃), these rings withstand thermal shock up to 1200℃ without cracking, deformation, or structural degradation.
Specialized Fused Quartz Components & Rings
Explore our precision-fabricated quartz rings and related high-temperature fused silica products engineered for vacuum, atmosphere-controlled, and high-heat industrial systems.
Custom Transparent Quartz Glass Ring
Precision-ground high-temperature resistant insulation rings for semiconductor wafer chambers, plasma confinement, and chemical reactors.
Custom Size Quartz Furnace Tube
Engineered for thermal processing furnaces, tube furnaces, and CVD/LPCVD semiconductor diffusion systems up to 1200℃.
Oversized Fused Quartz Tube
Large-diameter heavy-wall quartz tubes tailored for high-volume photovoltaic diffusion and extreme-temperature sintering chambers.
Premium Quartz Boat for High Temperature
Ultra-clean slotted wafer boats and carrier trays ensuring minimal thermal distortion and zero particulate contamination.
Fused Silica Quartz Plate – Heat Resistant
Optically polished quartz windows, sight glasses, and substrate plates offering unmatched UV-Vis-NIR light transmission.
Quartz Bell Jar with Thermal Stability
Heavy-duty vacuum chamber enclosures providing deep thermal shock resistance for epitaxy and thin-film deposition equipment.
High Purity Quartz Rod & Fused Silica Rod
Solid precision ground rods and light guides suited for semiconductor etching handles, optical fibers, and laser systems.
Plasma-Fused Quartz Ingots
Raw high-density bubble-free fused silica ingots, serving as premium blank material for precision ring machining and flange fabrication.
Physical, Thermal & Dielectric Specifications
Understanding why fused silica rings are the premier material choice for high-vacuum, high-heat, and corrosive chemical environments.
| Property Parameter | Standard Metric Value | Test Method / Reference Standard | Engineering Benefit |
|---|---|---|---|
| Purity (SiO2 Content) | ≥ 99.99% - 99.999% | ICP-OES / GDMS Analysis | Eliminates heavy metal ionic contamination in wafer fabs |
| Density | 2.20 g/cm³ | ASTM C693 | Lightweight structural integrity with zero open porosity |
| Coefficient of Thermal Expansion | 5.5 × 10&supmin;&sup7; / °C (20°C – 320°C) | ASTM E228 Dilatometry | Extreme thermal shock tolerance; won't crack on rapid cooling |
| Continuous Working Temperature | 1100°C – 1200°C | Thermal Stability Testing | Maintains rigid mechanical form inside high-heat furnaces |
| Softening Point | 1710°C | ASTM C338 | Ensures high safety margins in extreme thermal runaways |
| Dielectric Strength | 25 – 40 kV/mm (at 20°C) | ASTM D149 Electrical Test | Excellent electrical insulation for plasma and RF electrodes |
| Refractive Index (nD) | 1.4585 (at 589.3 nm) | Optical Spectrophotometry | Ideal for laser pass-through and spectroscopic monitoring |
Global Quartz Excellence: Customer Supreme & Process Control
From raw silica crystal mining in Donghai to multi-axis CNC micro-machining, we adhere strictly to international standards.
Customer Supreme
Adhering to the philosophy of "Quality First, Customer Supreme, Innovation-Driven, Integrity Management", our company has established a comprehensive customer care and rapid prototyping framework that ensures total design alignment from prototype to mass production.
Rigorous Quality Control
All products undergo multiple tests such as helium mass spectrometry leak detection, pressure resistance testing, polariscope stress analysis, and spectroscopic purity testing before leaving the factory to guarantee zero impurities and zero micro-cracks.
Customized Engineering Services
Meanwhile, the company provides flexible customized services, creating bespoke ring diameters, precision step-grooves, beveled edges, counter-bores, and polished finishes tailored to customers' specific equipment parameters and thermal process requirements.
Key Applications of Fused Quartz Rings
Our fused quartz rings and components serve as core hardware across leading high-tech industrial sectors.
Semiconductor & Plasma Etching
Used as focus rings, edge rings, shield rings, and insulating spacers in plasma etching (RIE/ICP) and deposition chambers. Quartz withstands aggressive fluorine and chlorine chemistry while preventing wafer contamination.
Photovoltaic Solar Cell Processing
Critical in high-temperature diffusion and oxidation furnaces for solar wafer processing. Fused quartz rings provide durable thermal insulation, gas flange seating, and wafer tube sealing under continuous 1100℃ cycles.
Chemical & Acid Purification Systems
Fused silica rings resist virtually all acids (with the sole exception of hydrofluoric acid and phosphoric acid at elevated temperatures). They are widely used in tri-acid purification equipment, distillation columns, and chemical burners.
Trusted by Customers Worldwide
Lianyungang Southeast Quartz Products Co., Ltd., established in 2015, is located in Donghai County, Lianyungang City, Jiangsu Province—a national base for the silicon material industry. As a professional manufacturer integrating R&D, design, production, sales and import & export trade, the company relies on the superior high-quality quartz ore resources in Donghai County.
Deeply engaged in the precision deep processing of quartz glass, Southeast Quartz has become a core supplier of quartz consumables for photovoltaic, semiconductor, laboratory, chemical, lighting and other industries with mature production technology, strict quality control systems and complete customized services.
In the future, the company will continue to deeply cultivate the field of quartz products, continuously improve technological innovation and production technology levels, and strive to provide global customers with higher-quality and more professional quartz solutions.
Product Processing & Manufacturing Display
Our facility possesses full-process production capacity from quartz raw material processing to finished component manufacturing, including glassblowing, hot melting, CNC grinding, and laser cutting.
Precision Product Processing Stages
Workshop & Factory Infrastructure
Factory Tour & Machining Workshops
Take a look inside our standardized workshops equipped with CNC glass engraving machines, large thermal annealing ovens, and cleanroom inspection lines.
Certificate Display & Quality Accreditations
Our strict quality management system conforms to ISO 9001, RoHS, and REACH European environmental directives, verified by third-party SGS laboratory inspections.
Custom Fused Quartz Rings: Engineering Inquiries
Have questions regarding dimensional tolerances, purity grading, or custom drawings? Find answers below.
What dimensional tolerances can you achieve for custom quartz rings?
Using our state-of-the-art CNC diamond grinding centers, we routinely achieve outer diameter (OD) and inner diameter (ID) tolerances down to ±0.02mm, and thickness tolerances down to ±0.01mm. Surface flatness can be polished to λ/4 with Ra < 0.5nm for ultra-critical optical or sealing applications.
How do quartz rings perform in corrosive semiconductor plasma etch chambers?
High-purity fused quartz demonstrates remarkable resistance against fluorine and chlorine based plasmas (such as CF4, CHF3, Cl2, and BCl3). Its ultra-low trace metal content (< 1 ppm total metals) prevents ionic contamination on silicon wafers, significantly increasing production yields.
Can you customize quartz rings according to CAD drawings or STEP files?
Yes. We specialize in custom fabrication from customer-supplied technical drawings (.DWG, .DXF, .STEP, .IGES, or PDF). We support custom features including chamfers, step recesses, O-ring sealing grooves, counter-bores, and precision drilled bolt holes.
What is the typical lead time and export packaging standard?
Standard custom prototypes ship within 5–10 business days. For volume orders, lead times are tailored to production batching. All quartz rings are cleanroom-cleaned, vacuum bubble-wrapped, and packed in reinforced export wooden cases with shock absorption padding.
Partner with a Premier Quartz Rings Supplier Today
Whether you require standard insulation rings or ultra-precision semiconductor quartz rings, our engineering team is ready to evaluate your technical drawings and provide rapid quotations.