Quartz Tube
Quartz Plate
Quartz Rod
Optical Applications
Semiconductor Industry
Laboratory and Chemical Applications
Our quartz flanges are precision-engineered from high-purity fused silica, offering unparalleled performance for critical sealing, connection, and viewing applications in demanding environments. Designed to withstand extreme temperatures, corrosive chemicals, and high vacuum conditions, these durable flanges are ideal for integration into tube furnaces, chemical reactors, and sophisticated analytical systems. Available in various standard and custom dimensions (outer diameter, inner diameter, thickness), we provide comprehensive customization to meet your exact industrial or research specifications, ensuring a secure and contamination-free interface.
Remarks：
- ayment method: By wire transfer or advance payment, depending on the quantity of the order.
- Delivery time: According to the order quantity.
- Transportation method: Sea freight or air freight, depending on the customer.
| Property Content | Property Values |
|---|---|
| SiO2 | 99.99% |
| Density | 2.2×10³ kg/cm³ |
| Hardness | 5.5 - 6.5 Mohs' Scale 570 KHN 100 |
| Tensile Strength | 4.8×10⁷ Pa (N/mm2) (7000 psi) |
| Compression Strength | >1.1×10⁹ Pa (160,000 psi) |
| Coefficient of Thermal Expansion | 5.5×10⁻⁷ cm/cm·°C (20°C-320°C) |
| Thermal Conductivity | 1.4 W/m·°C |
| Specific Heat | 670 J/kg·°C |
| Softening Point | 1730°C (3146°F) |
| Annealing Point | 1210°C (2210°F) |
| Strain Point | 1120°C (2048°F) |
| Work Temperature | 1200°C (2192°F) |
| Electrical Resistivity | 7×10⁷ ohm cm (350°C) |
| Size | Customized |
| Logo | Customized Logo Accept |
Extreme Temperature & Thermal Shock Resistance
Manufactured from high-purity fused silica, these quartz flanges can withstand exceptionally high operating temperatures (often exceeding 1000°C) and exhibit remarkable resistance to thermal shock, preventing cracking or deformation even with rapid temperature changes.
Superior Chemical Inertness & Purity
Quartz is highly resistant to almost all acids (except hydrofluoric acid and hot concentrated phosphoric acid) and offers excellent resistance to alkalis. This chemical inertness, combined with its high purity, ensures that the flange will not contaminate the process or react with corrosive media.
Excellent Vacuum Integrity & Sealing Capability
Precision-machined surfaces allow these quartz flanges to achieve and maintain high vacuum seals, critical for applications in semiconductor processing, thin film deposition, and high-vacuum research systems where leak-tightness is paramount.
Optical Transparency & Customizability
As a highly transparent material, quartz flanges can also function as viewports, allowing visual monitoring of internal processes. Crucially, they are fully customizable in terms of diameter, thickness, hole patterns, and integration with other components (e.g., direct fusion to quartz tubes or connection to metal flanges), providing tailored solutions for unique system requirements.
Application Scenario
High-Temperature Furnace and Reactor Sealing
Used as a crucial connecting component for sealing ends of quartz furnace tubes, reaction vessels, or custom reactor chambers in high-temperature environments (e.g., tube furnaces, CVD systems). Their ability to withstand extreme heat ensures a stable and reliable seal under operational conditions.
Vacuum System Construction and Connections
Essential for building and maintaining high and ultra-high vacuum systems. Quartz flanges provide leak-tight, bakeable connections between vacuum chambers, components, or feedthroughs, critical for applications like thin film deposition, material research under vacuum, or vacuum drying.
Corrosive Chemical Process Equipment
Integrated into systems handling aggressive chemicals, strong acids, or alkalis where traditional metal or polymer flanges would corrode. Quartz’s chemical inertness makes it ideal for chemical synthesis, etching, or purification processes in demanding chemical environments.
Optical and Analytical Instrument Integration
Employed as precision window flanges or connection ports in optical and analytical instruments, especially where high temperatures, corrosive gases, or specific UV/Visible light transmission is required. This allows for in-situ monitoring or light path integration without material degradation.
Handle with care
Quartz glass products are made from valuable materials and must be handled gently to avoid collisions and falls.
Regular maintenance
The maintenance of quartz tubes must be performed regularly to ensure their long-term stable performance. Regularly check the connections, fixings, and mechanical vibrations of the quartz tubes to prevent abnormalities. The exterior of the quartz tubes is prone to contamination from dust and moisture, so they should be cleaned regularly.
Storage environmen
When storing quartz tubes, care should be taken to avoid exposure to mechanical vibrations, shocks, and excessively high temperatures. They should be kept in a dry, cool, and well-ventilated place, avoiding direct sunlight and high-temperature environments.
Quartz flanges can be connected to other quartz components by direct fusion. For connections to metal flanges, they typically utilize a specialized adapter (e.g., a quartz-to-metal transition piece) or are designed to be joined with a suitable O-ring or gasket (such as those made from Viton, Kalrez, or copper for high vacuum) within a bolted flange assembly. The choice of seal depends on the temperature, pressure, and chemical environment of the application.
Yes, precision-machined quartz flanges are highly suitable for high and ultra-high vacuum (UHV) applications. When properly assembled with appropriate vacuum gaskets and clamps, they can achieve excellent vacuum integrity. While the exact leak rate depends on the overall system and sealing method, quartz itself is non-porous and contributes negligibly to gas permeation, making it an ideal material for maintaining extremely low pressures.
Quartz flanges offer distinct advantages: superior temperature resistance (operating at much higher temperatures than borosilicate glass and without the thermal expansion issues of metals in rapid heating cycles), exceptional chemical inertness (resisting most corrosive chemicals that would attack stainless steel or borosilicate), and high purity (preventing contamination). They are also optically transparent, serving as viewports when needed, which is not possible with metal flanges.
Laser Drilling of Quartz
Threaded Quartz Tube
External Thread on Quartz Tube
Internal Threaded Quartz Tube
Quartz Tube Slotted
Window on Quartz Tube
Angled Cut Quartz Tube
Quartz Tile
Quartz Tube with Window
Frequently asked questions
We specialize in the end-to-end manufacturing of high-purity quartz glass components. Our core product lines include:
Quartz Tubing & Rods: A wide range of diameters and specifications.
Quartz Plates & Discs: Precision-cut and polished for optical and industrial use.
Quartz Labware: A full suite of standard and custom glassware, including beakers, flasks, and boats.
Semiconductor-Grade Quartz: High-purity components like process tubes and carriers for semiconductor fabrication.
Custom Fabricated Components: We can produce complex parts tailored to your unique designs and specifications.
Yes. Custom fabrication is at the core of our business. With over a decade of specialized experience, we partner with companies to provide expert OEM/ODM services. Our capabilities include welding, grinding, drilling, polishing, bending, and other precision processing techniques to create components that meet your exact requirements.
Quality is paramount in our manufacturing process. We are an ISO 9001:2015 certified manufacturer, ensuring that our processes meet international quality management standards.Our products also undergo rigorous SGS testing for purity and performance. We use high-purity raw materials (up to 99.998% SiO2) to produce fused quartz and fused silica products with exceptional thermal stability, high-temperature resistance, and chemical inertness.
We've streamlined our process to be as efficient as possible:
Submit Your RFQ: Send us your technical drawings, specifications, and requirements via our website contact form or email.
Rapid Response: You can expect an initial response within minutes and detailed communication within half an hour.
Design & Proposal: We will deliver a detailed design proposal and a competitive quote within 24 hours.
Prototyping & Production: Upon approval, we move swiftly from prototyping to full-scale production to meet your deadlines.
Partnering with Aoxin Quartz offers several key advantages:
Proven Expertise: With 10+ years in the industry, we have the technical knowledge to tackle complex challenges.
One-Stop Solution: We manage the entire production process, from sourcing high-purity raw materials to fabricating and finishing complex components.
Competitive Value: Located in a major quartz production hub, we leverage an efficient supply chain and advanced manufacturing to offer exceptional quality at a competitive price point.
Dedicated Partnership: Over 90% of our clients become long-term partners. We are committed to your success through responsive service, reliable quality, and innovative solutions.
