Quartz Tube
Quartz Plate
Quartz Rod
Optical Applications
Semiconductor Industry
Laboratory and Chemical Applications
Our high-purity quartz furnace plugs are essential components for various tube furnace applications, providing reliable sealing and temperature control in demanding environments. Crafted from premium fused silica, these stoppers offer exceptional heat resistance (up to 1200°C for long-term use) and superior chemical inertness against most acids and alkalis. Available in multiple sizes and customizable to your exact specifications, including frosted or clear finishes, to meet the stringent requirements of laboratory research, semiconductor manufacturing, and industrial thermal processes.
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.
| Diameter (mm) | Length (mm) | Applicable outer diameter (mm) | Diameter (in) | Length (in) | Applicable outer diameter (in) | |
|---|---|---|---|---|---|---|
| 22 | 65 | 25 | 0.87 | 2.56 | 0.98 | |
| 18 | 65 | 25 | 0.71 | 2.56 | 0.98 | |
| 20 | 65 | 25 | 0.79 | 2.56 | 0.98 | |
| 28 | 65 | 40 | 1.10 | 2.56 | 1.57 | |
| 24 | 65 | 30 | 0.94 | 2.56 | 1.18 | |
| 25 | 65 | 30 | 0.98 | 2.56 | 1.18 | |
| 30 | 65 | 40 | 1.18 | 2.56 | 1.57 | |
| 32 | 65 | 40 | 1.26 | 2.56 | 1.57 | |
| 40 | 65 | 50 | 1.57 | 2.56 | 1.97 | |
| 35 | 65 | 50 | 1.38 | 2.56 | 1.97 | |
| 45 | 65 | 60 | 1.77 | 2.56 | 2.36 | |
| 34 | 65 | 50 | 1.34 | 2.56 | 1.97 | |
| 42 | 65 | 50 | 1.65 | 2.56 | 1.97 | |
| 38 | 65 | 50 | 1.50 | 2.56 | 1.97 | |
| 48 | 65 | 60 | 1.89 | 2.56 | 2.36 | |
| 52 | 65 | 60 | 2.05 | 2.56 | 2.36 | |
| 50 | 65 | 60 | 1.97 | 2.56 | 2.36 | |
| 58 | 65 | 70 | 2.28 | 2.56 | 2.76 | |
| 60 | 65 | 70 | 2.36 | 2.56 | 2.76 | |
| 65 | 65 | 80 | 2.56 | 2.56 | 3.15 | |
| 66 | 65 | 70 | 2.60 | 2.56 | 2.76 | |
| 70 | 65 | 80 | 2.76 | 2.56 | 3.15 | |
| 62 | 65 | 70 | 2.44 | 2.56 | 2.76 | |
| 68 | 65 | 80 | 2.68 | 2.56 | 3.15 | |
| 78 | 65 | 90 | 3.07 | 2.56 | 3.54 | |
| 80 | 65 | 90 | 3.15 | 2.56 | 3.54 | |
| 84 | 65 | 100 | 3.31 | 2.56 | 3.94 | |
| 85 | 65 | 100 | 3.35 | 2.56 | 3.94 | |
| 88 | 65 | 100 | 3.46 | 2.56 | 3.94 | |
| 90 | 65 | 100 | 3.54 | 2.56 | 3.94 | |
| 95 | 65 | 110 | 3.74 | 2.56 | 4.33 | |
| 98 | 65 | 110 | 3.86 | 2.56 | 4.33 | |
| 100 | 65 | 110 | 3.94 | 2.56 | 4.33 | |
| 105 | 65 | 120 | 4.13 | 2.56 | 4.72 | |
| 107 | 65 | 120 | 4.21 | 2.56 | 4.72 | |
| 110 | 65 | 120 | 4.33 | 2.56 | 4.72 | |
| 115 | 65 | 130 | 4.53 | 2.56 | 5.12 |
| 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 |
Exceptional High-Temperature Resistance
Engineered from high-purity quartz, these plugs withstand prolonged exposure to temperatures up to 1150°C and short-term peaks up to 1450°C, making them ideal for demanding furnace environments.
Superior Chemical Inertness
Highly resistant to most acids and alkalis, ensuring no contamination or degradation in corrosive atmospheres, which is crucial for maintaining process purity and product integrity.
High Purity & Cleanliness
Manufactured with SiO2 purity of ≥ 99.99%, featuring smooth surfaces and no bubbles or streaks, preventing contamination and ensuring stable performance in sensitive applications like semiconductor processing.
Customization for Precise Fit
Available in multiple sizes and adaptable for custom specifications, allowing for a perfect seal and optimal performance tailored to diverse tube furnace models and specific experimental or industrial requirements.
Application Scenario
Laboratory Research & Development
Widely used in academic and industrial labs for various thermal processes such as annealing, sintering, crystal growth, and catalyst testing in tube furnaces, ensuring a controlled atmosphere (vacuum, inert gas) and precise temperature management.
Semiconductor Manufacturing
Essential for critical high-temperature processes like diffusion, oxidation, and Chemical Vapor Deposition (CVD) in the production of semiconductors, where their high purity and resistance to contamination are paramount for wafer processing.
Advanced Materials Processing
Employed in the synthesis and treatment of advanced materials, including ceramics, composites, and specialized alloys, providing a sealed environment for processes requiring high temperatures and specific atmospheric conditions.
Analytical & Quality Control
Utilized in analytical instruments and quality control procedures that involve high-temperature sample preparation or testing, ensuring accurate and contamination-free analysis of various substances.
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.
Yes, absolutely. Our quartz furnace plugs are highly customizable. We offer various sizes and can manufacture them to your precise specifications, including specific diameters, lengths, shapes, and surface finishes (clear or frosted) to ensure a perfect fit and optimal sealing for your particular tube furnace model or experimental setup.
These high-purity quartz furnace plugs are designed for excellent performance in high-temperature environments. They can be used for long-term applications at temperatures up to 1200°C and can withstand short-term exposures up to 1450°C. The softening point of the material is 1730°C.
Our quartz furnace plugs offer superior resistance to most acids and alkalis, making them ideal for chemically aggressive environments. However, it’s important to note that like all quartz glass, they are generally not resistant to hydrofluoric acid (HF). Please consult our technical specifications for compatibility with specific chemicals.
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.
