Custom Sapphire Tube for R&D, Furnace & Vacuum Systems
Research-Grade Sapphire Tubing | Made to Order | Low MOQ
Design-Realized provides custom sapphire tubes engineered for high-temperature furnaces, CVD/MOCVD reactors, vacuum chambers, and advanced scientific instrumentation. Our research-grade sapphire tubing is manufactured from high-purity single-crystal sapphire and finished to optical and mechanical specifications required by modern laboratories.
Key Applications
High-Temperature & Crystal Growth
- CVD / MOCVD reactors
- Crystal growth furnaces
- Annealing & diffusion furnaces
- Epitaxy systems
Vacuum & Semiconductor
- High-vacuum / UHV systems
- Plasma processing chambers
- ALD systems
- Analytical instruments
Chemical & Harsh Environments
- Corrosive gas reactors
- High-purity chemical processing
- High-pressure test chambers
Technical Capabilities
| Parameter | Specification |
|---|---|
| Material | Single-crystal Al₂O₃ (Sapphire) |
| Purity | Up to 99.999% |
| Outer Diameter | Custom (2 mm – 200 mm+) |
| Inner Diameter | Custom (±10 µm typical) |
| Length | Up to 600 mm (customizable) |
| Surface Finish | Ra < 2 nm (optical polish) |
| Orientation | c-axis / a-axis available |
| Max Temperature | >1900 °C (environment dependent) |
| Coatings | AR / Functional coatings (optional) |
Custom Fabrication Process
- Requirement Review (Application / Temperature / Environment)
- Material Selection & Orientation Control
- Precision Cutting & Grinding
- Inner/Outer Surface Polishing
- Dimensional Inspection & QA
- Cleaning & Packaging for Research Use
Each sapphire tube is manufactured under strict quality control to ensure dimensional accuracy, surface integrity, and long-term stability.
Why Choose Our Sapphire Tubes
Academic-Grade Reliability + Industrial-Grade Delivery
✔ Research-grade single-crystal sapphire
✔ Support for universities, national labs, and early-stage startups
✔ Small-batch & prototype friendly
✔ Low minimum order quantity (MOQ)
✔ Fast turnaround for R&D projects (typical lead time: 3–4 weeks)
✔ Customized dimensions up to OD 150 mm
✔ Tight dimensional and surface tolerances
✔ NDA and IP protection available
✔ Full inspection and documentation upon request
With strong experience in crystal growth and advanced materials engineering, we understand real laboratory requirements beyond standard catalog products. We support projects from early feasibility studies to validated experimental platforms.
Typical Use Cases
- Replacement furnace tubes
- Custom reactor inserts
- Optical observation tubes
- High-purity gas flow channels
- Sample holders for extreme environments
Frequently Asked Questions (FAQ)
What is the maximum operating temperature of sapphire tubes?
Sapphire tubes can operate above 1900 °C in inert or vacuum environments. Actual limits depend on atmosphere and mechanical stress.
Sapphire tube vs quartz tube: which is better?
Sapphire offers significantly higher temperature resistance, mechanical strength, and chemical stability compared to quartz, making it ideal for advanced R&D systems.
Can you supply small quantities or prototypes?
Yes. We specialize in low-volume and prototype sapphire tube fabrication for research laboratories.
Do you provide inner surface polishing?
Yes. Optical-grade inner and outer surface polishing (Ra < 2 nm) is available upon request.
Can you support custom orientations?
We offer c-axis and a-axis sapphire tubes depending on application requirements.
About Design-Realized
Design-Realized is a U.S.-based supplier of advanced crystalline materials and custom-engineered components for scientific and industrial research. We support universities, national laboratories, and OEM partners worldwide with precision sapphire fabrication and technical consulting.
Contact us today to discuss your custom sapphire tube project.
