Vacuum Accessories
CF Ultra-High Vacuum Observation Window Stainless Steel Flange Sapphire Glass Sight Glass
Item Number : KT-VA01
Price varies based on specs and customizations
- Sapphire glass thickness
- 1mm~5mm
- Working temperature
- -200℃ ~ +200℃
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Product Application
The CF ultra-high vacuum observation window stainless steel flange sapphire glass sight glass is specifically designed for applications requiring ultra-high vacuum environments, typically at pressures below 10^-9 Torr. This product is indispensable in high-end scientific research and industrial applications, including:
- Semiconductor Manufacturing: Ensuring clear observation and precise control during the fabrication of semiconductor devices.
- Vacuum Coating: Monitoring the coating process in vacuum chambers to ensure uniform and high-quality coatings.
- Optical Instruments: Providing clear views in optical setups that require ultra-high vacuum conditions.
- Aerospace: Supporting research and testing in aerospace engineering that demands ultra-high vacuum environments.
- Scientific Research Experiments: Facilitating experiments in physics, chemistry, and materials science that require ultra-high vacuum conditions.
Product Feature
Sapphire Glass Material
- High Hardness: Sapphire glass, with a hardness of 9 Mohs, is second only to diamond, ensuring exceptional wear resistance and a long service life.
- Excellent Light Transmittance: With a light transmittance of over 92%, sapphire glass allows for clear observation of the situation inside the vacuum chamber.
Stainless Steel Flange
- High Strength and Corrosion Resistance: Made from high-quality stainless steel, the flange offers high strength, corrosion resistance, and a long service life.
- Excellent Sealing Performance: The flange ensures a stable and reliable vacuum environment, critical for ultra-high vacuum applications.
Easy Installation
- CF Standard Compliance: The flange design adheres to CF standards, making installation quick and easy, and facilitating easy maintenance.
Detail & Parts





Technical specifications

| Model | ΦH | ΦC | ΦD | n-ΦP | B |
|---|---|---|---|---|---|
| CF 16 | 34 | 27 | 14 | 6-Φ4.3 | 18 |
| CF 25 | 54 | 43 | 23 | 6-Φ6.6 | 14 |
| CF 35 | 70 | 58.7 | 38 | 6-Φ6.6 | 16 |
| CF 50 | 86 | 72.4 | 50 | 8-Φ8.4 | 17 |
| CF 63 | 114 | 92.2 | 62 | 8-Φ8.4 | 20 |
| CF 100 | 152 | 130.3 | 95 | 16-Φ8.4 | 20 |
| CF 150 | 202 | 181.1 | 146 | 20-Φ8.4 | 22 |
| CF 200 | 253 | 231.9 | 146 | 24-Φ8.4 | 24.5 |
Working Principle
The CF ultra-high vacuum observation window operates by integrating a high-quality stainless steel flange with a sapphire glass sight glass. The stainless steel flange provides the necessary structural support and sealing, while the sapphire glass allows for clear observation without compromising the vacuum integrity. The combination of materials ensures that the window can withstand the extreme conditions of an ultra-high vacuum environment, maintaining its structural integrity and optical clarity over time.
Product Advantage
Reliable Performance in Ultra-High Vacuum
- Stable and Reliable Operation: The superior performance of sapphire glass and stainless steel flange ensures consistent operation in ultra-high vacuum environments.
Clear Observation and Precise Control
- High Transmittance Sapphire Glass: The high light transmittance of sapphire glass enables clear observation of the vacuum chamber, facilitating precise control and monitoring.
Versatile Specifications
- Multiple Options: A variety of flange sizes and sapphire glass dimensions are available to meet diverse application requirements.
Easy Installation and Maintenance
- CF Standard Design: The flange's compliance with CF standards simplifies installation and maintenance processes, ensuring quick and efficient setup.
This CF ultra-high vacuum observation window is a reliable and versatile solution for applications requiring clear observation in ultra-high vacuum environments, offering high performance, durability, and ease of use.
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Product Datasheet
CF Ultra-High Vacuum Observation Window Stainless Steel Flange Sapphire Glass Sight Glass
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