Precision Sapphire Multi-Channel Tubes
Sapphire multi-channel tubes are compact precision components containing several longitudinal bores within a single sapphire body.
Compared with conventional single-bore sapphire tubing, the multi-channel structure allows several wires, optical fibers, electrodes, gases or other functional elements to pass through one compact component while remaining physically separated.
Manufactured from synthetic sapphire, these tubes combine high hardness, electrical insulation, thermal stability, optical transparency and excellent wear resistance.
We supply customized 2-bore, 4-bore and other multi-channel sapphire tubes for industrial, optical, semiconductor and scientific applications.
Main Product Options
Our sapphire multi-channel tubing can be manufactured according to customer drawings.
Available configurations include:
- Dual-bore sapphire tubes
- Four-bore sapphire tubes
- Multi-hole sapphire tubes
- Micro-bore sapphire tubing
- Parallel channel designs
- Symmetrical bore layouts
- Customized bore positions
- Different bore diameters within one component
- Custom tube lengths
For development projects, samples and small-quantity production can also be supported.
Typical Sapphire Multi-Bore Tube Specifications
The following dimensions are examples from current product designs:
| Configuration | Outer Diameter | Bore Diameter |
|---|---|---|
| 2 Channels | Ø3.8 mm | Ø0.85 mm |
| 2 Channels | Ø3.3 mm | Ø1.0 mm |
| 4 Channels | Ø3.4 mm | Ø0.82 mm |
These dimensions are reference specifications only.
Outer diameter, bore diameter, channel quantity, spacing and tube length can be customized.
Material
Material: Synthetic Sapphire
Chemical Composition: Al₂O₃
Crystal Material: Single-crystal sapphire
Sapphire is particularly suitable for precision tube components exposed to mechanical wear, elevated temperatures and electrically sensitive environments.
Advantages of Sapphire Multi-Channel Tubing
Excellent Wear Resistance
Sapphire is significantly harder than conventional glass materials.
This makes sapphire multi-bore tubes suitable for applications where wires, fibers, pins or other components repeatedly pass through the internal channels.
The hard bore surfaces help reduce mechanical wear over extended service periods.
Compact Multi-Channel Design
Several independent channels can be incorporated into a single small-diameter sapphire tube.
This can help reduce assembly size and simplify the positioning of:
- Electrical wires
- Electrodes
- Optical fibers
- Sensor elements
- Capillaries
- Small fluid channels
For miniature assemblies, the relationship between channel diameter, channel spacing and outer wall thickness can be optimized according to the customer’s design.
High Temperature Stability
Sapphire maintains its structural properties at temperatures where many polymers and ordinary glass materials may become unsuitable.
It is therefore widely considered for components exposed to:
- High-temperature furnaces
- Thermal processing systems
- Sensor assemblies
- Vacuum equipment
- Semiconductor process environments
Electrical Insulation
Sapphire is an electrical insulator.
A multi-bore structure can therefore provide physical separation between several conductive elements while keeping the overall component compact.
This is useful for electrode, probe and sensor assemblies.
Optical Transparency
Because sapphire is an optically transparent crystal, it can be used in assemblies where optical access or light transmission is required.
Depending on the application, the external surface or end faces can also be polished.
Precision Bore Processing
The manufacture of small multi-bore sapphire tubing requires control over both the external geometry and the internal channels.
Important parameters include:
- Outer diameter
- Bore diameter
- Bore position
- Bore spacing
- Channel parallelism
- Minimum wall thickness
- Tube straightness
- Tube length
- End-face flatness
- Edge condition
- Surface finish
For very small tube diameters, bore arrangement and remaining wall thickness are especially important for manufacturing stability.
Our team can review drawings before production and provide manufacturability feedback.
Available Surface Finishes
Different finishing levels can be provided depending on application requirements.
Outer Diameter
- Ground finish
- Fine ground finish
- Polished finish
Internal Bores
- Machined bore
- Precision finished bore
- Special finish subject to bore size
End Faces
- Ground
- Fine ground
- Polished
- Custom finishing
Edge Treatment
- Deburring
- Light chamfer
- Protective chamfer
- Customer-defined edge geometry
Typical Applications
Precision sapphire multi-channel tubes can be used for a variety of demanding assemblies.
Sensor Components
Multiple channels can accommodate sensing elements, wires or electrodes while maintaining separation between individual components.
Optical Fiber Positioning
Multi-hole sapphire structures can provide mechanical positioning and wear-resistant protection for fibers in compact optical assemblies.
Semiconductor Equipment
Sapphire’s thermal stability, electrical insulation and chemical resistance make it suitable for specialized semiconductor equipment components.
High-Temperature Instrumentation
The tubes may be used to protect or position wires, electrodes and sensing elements in elevated-temperature environments.
Electrical Feedthrough Components
Multiple channels allow several conductive elements to pass through one insulating sapphire body.
Scientific Instruments
Custom sapphire multi-bore tubes are also suitable for research instruments and specialized laboratory equipment requiring precision microchannels.
2-Bore Sapphire Tube
A dual-bore sapphire tube contains two longitudinal channels inside one circular sapphire body.
Typical uses include:
- Two-wire insulation
- Dual-electrode positioning
- Sensor probes
- Fiber positioning
- Compact feedthrough assemblies
Both bores can be manufactured with the same diameter, or different diameters may be evaluated for customized projects.
4-Bore Sapphire Tube
Four-bore sapphire tubing provides additional channels while maintaining a compact outer diameter.
Typical uses include:
- Four-wire assemblies
- Multi-electrode probes
- Optical fiber arrays
- Sensor packages
- Precision positioning components
Bore layout can be designed according to the final assembly geometry.
Custom Sapphire Micro-Bore Tubes
Not every project requires a standard hole configuration.
For custom designs, we can evaluate:
- Number of holes
- Hole diameter
- Hole-to-hole spacing
- Hole distribution
- Outer diameter
- Tube length
- Surface finish
- Dimensional tolerance
Customers are encouraged to provide a technical drawing whenever possible.
Custom Manufacturing Service
We support sapphire tube projects from prototype evaluation through repeat production.
Before quotation, please provide:
- Tube outer diameter
- Number of channels
- Individual bore diameter
- Bore spacing or position
- Overall length
- Required quantity
- Dimensional tolerances
- Surface finish
- End-face requirement
- Application or drawing
For special geometries, a drawing is recommended so that the bore arrangement and minimum wall thickness can be reviewed.
Why Choose Custom Sapphire Multi-Channel Tubes?
Multi-bore sapphire tubing provides a combination of:
Precision geometry + compact channel arrangement + high hardness + electrical insulation + thermal stability + optical transparency
This makes it especially useful for applications where conventional metal, polymer or glass tubes cannot provide the required combination of mechanical and functional properties.
Request a Quote for Precision Sapphire Multi-Channel Tubes with Custom Micro Bores
Tell us your required specifications, dimensions, quantity, application and technical requirements. You can also provide drawings or additional project information. Our technical team will review your requirements and reply as soon as possible.
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