
Vacuum Accessories
Ultra High Vacuum Observation Window KF Flange 304 Stainless Steel High Borosilicate Glass Sight Glass
Item Number : KT-VA04
Price varies based on specs and customizations
- Maximum temperature
- 350℃
- Material
- 304 stainless steel + Borosilicate
- Outer diameter
- 40mm~75mm

Shipping:
Contact us to get shipping details Enjoy On-time Dispatch Guarantee.
KF Ultra-High Vacuum Observation Window: Precision Viewing for Demanding Environments
KINTEK's KF Ultra-High Vacuum Observation Window is meticulously engineered to provide crystal-clear, reliable viewing in environments requiring vacuum conditions typically above 10-9 Torr. This essential component empowers precise monitoring and control across a range of high-tech industries and scientific research applications.
Key Features & Unmatched Performance
-
Superior Optical Clarity with High Borosilicate Glass:
- Crystal-Clear Viewing: Achieves over 92% light transmittance, allowing for detailed observation of your vacuum chamber's interior.
- Exceptional Thermal Stability: Operates effectively across a wide temperature range (-200℃ to +300℃) with a low expansion coefficient (3.3 x 10^-6/K), minimizing distortion and ensuring consistent performance under thermal stress.
- Robust Chemical Resistance: Highly resistant to acid and alkali corrosion, guaranteeing a long service life even in challenging chemical environments.
-
Reliable Sealing with 304 Stainless Steel Flange:
- Durable Construction: Made from high-quality 304 stainless steel, offering high strength and excellent corrosion resistance for lasting durability.
- Vacuum Integrity Assured: Provides superior sealing performance, crucial for maintaining a stable and reliable ultra-high vacuum environment, preventing leaks and ensuring experimental success.
-
Designed for Your Application's Success:
- Easy Installation & Maintenance: Complies with KF standards for quick, straightforward installation and easy replacement, reducing downtime and operational costs.
- Versatile Sizing: Available in a range of standard flange sizes (KF25, KF40, KF50) and glass thicknesses to meet diverse experimental and industrial requirements (see Technical Specifications below).
- Long-Term Reliability: The combination of high-quality materials and precision engineering ensures consistent performance and durability, making it a dependable solution for your critical vacuum system.
Technical Specifications
Model | Outer diameter | Inner diameter (view diameter) | Maximum temperature | Thickness | Material |
---|---|---|---|---|---|
KF 25 | 40mm | 23mm | 350℃ | 15.5mm | 304 stainless steel + Borosilicate |
KF 40 | 55mm | 20mm | 15.5mm | ||
KF 50 | 75mm | 34mm | 16mm |
Versatile Applications
Our KF observation windows are indispensable in fields where precise vacuum monitoring is critical, including:
- Semiconductor Manufacturing: Enabling clear observation for precise control during device fabrication processes.
- Vacuum Coating: Facilitating real-time monitoring and quality assurance of coating processes.
- Optical Instruments: Supporting the development, alignment, and operation of sensitive optical devices in ultra-high vacuum.
- Aerospace Research: Utilized for observing material behavior and processes within simulated space vacuum test chambers.
- Scientific Research: Providing reliable visual access for a wide array of experiments and studies conducted in UHV environments.
How It Works: Ensuring Vacuum Integrity and Clear Views
The KF ultra-high vacuum observation window operates by seamlessly integrating high borosilicate glass with a robust 304 stainless steel flange. The high-purity glass provides a transparent, distortion-resistant barrier for observation, while the precisely machined flange ensures a secure, leak-tight seal against the vacuum chamber. This synergy allows for continuous, clear monitoring of processes within the ultra-high vacuum environment without compromising its integrity or performance.
Tailored Solutions for Your Vacuum Needs
At KINTEK, we understand that every experiment and application can have unique demands. Leveraging our strong R&D capabilities and in-house manufacturing, we offer deep customization for our KF Ultra-High Vacuum Observation Windows to precisely meet your specific requirements. Whether you need a non-standard size, particular material considerations, or integration support with your existing vacuum systems, our team is here to engineer the perfect solution.
Ready to achieve optimal viewing in your vacuum setup? Contact our specialists today to discuss your project, explore customization options, or request a detailed quote for our KF Observation Windows.
4.8
out of
5
Incredible quality! The borosilicate glass is crystal clear and the stainless steel flange feels ultra-durable.
4.7
out of
5
Fast shipping and perfect fit. This sight glass exceeded my expectations for vacuum applications.
4.9
out of
5
Absolutely worth every penny! The precision engineering is top-notch—no leaks, no issues.
4.8
out of
5
High-tech and reliable. The vacuum seal is flawless, and the glass withstands extreme conditions.
4.7
out of
5
Superb craftsmanship! The 304 stainless steel gives it a premium feel, and the glass is scratch-resistant.
4.9
out of
5
Delivered ahead of schedule! The clarity of the glass is unmatched—perfect for lab observations.
4.8
out of
5
A game-changer for my setup. The KF flange fits seamlessly, and the vacuum integrity is impeccable.
4.7
out of
5
Exceptional value! The materials are high-grade, and the design is both functional and sleek.
4.9
out of
5
Flawless performance under high vacuum. The borosilicate glass is a standout—no fogging or distortion.
4.8
out of
5
Precision at its finest. The stainless steel flange ensures a tight seal every time—highly recommend!
4.7
out of
5
Quick delivery and outstanding quality. The sight glass is a perfect blend of durability and clarity.
4.9
out of
5
Top-tier engineering. The high borosilicate glass resists thermal shock, making it ideal for lab use.
4.8
out of
5
Impressive build! The stainless steel flange is robust, and the glass provides unobstructed views.
4.7
out of
5
A stellar product. The vacuum compatibility is flawless, and the glass remains pristine under pressure.
Products
Ultra High Vacuum Observation Window KF Flange 304 Stainless Steel High Borosilicate Glass Sight Glass
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