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Knife-Edge Flange Gas Sealed Connectors | China Suppliers & Factory for High Vacuum Solutions
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Knife-Edge Flange Gas Sealed Connectors | China Suppliers & Factory for High Vacuum Solutions

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The Knife-Edge Flange (CF) Receptacle is a precision-engineered component that plays a crucial role in creating high-integrity, demountable seals for high-vacuum (HV) and ultra-high-vacuum (UHV) systems. Manufactured in accordance with the international standard ISO 3669**, our products guarantee global compatibility and interchangeability within scientific and industrial vacuum infrastructure. Our factory in China produces a wide range of nominal diameters from 10mm to 50mm, offering a versatile sealing solution for the construction and interfacing of vacuum chambers, pipelines, and equipment. Whether for small research instruments or large-scale industrial systems, our flanges are the ideal choice for suppliers seeking reliable and efficient vacuum solutions.

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    Product Details

    Features and Advantages

    • 1

      The defining feature is the knife-edge sealing mechanism, where a sharp, precision-machined edge on the flange bites into a soft, ductile metal gasket (typically copper or aluminum) to form an extremely reliable, helium-leak-tight metal seal.

    • 2

      This design offers the critical advantages of superior sealing performance, the ability to withstand bake-out temperatures exceeding 150°C for UHV applications, and excellent reusability over many cycles.

    • 3

      The receptacle housing is crafted from high-grade stainless steel (304 or 316L), providing excellent corrosion resistance, mechanical strength, and compatibility with the shell sealing requirements of connected components.

    • 4

      The system's versatility is enhanced by support for various plug configurations, including single-ended plugs, double-ended plugs, and double-ended wiring forms. A significant additional advantage is the capacity for customization of both standard and non-standard vacuum flange structures and dimensions to meet unique application requirements.

    Application

    These CF flanges are fundamental components in any application requiring reliable high or ultra-high vacuum. Key sectors include:

    🔬 Scientific Research

    Particle accelerators, synchrotrons, surface science analysis chambers (e.g., XPS, AES), and fusion research devices.

    💡 Semiconductor Manufacturing

    Critical for plasma etching, chemical vapor deposition (CVD), and molecular beam epitaxy (MBE) systems.

    🛰️ Space Simulation

    Used to construct thermal vacuum chambers for testing satellites and spacecraft components.

    🧪 Advanced Analytical Instrumentation

    Mass spectrometers, electron microscopes, and other high-vacuum analytical tools.

    Frequently Asked Questions

    Q What makes the knife-edge sealing mechanism superior to other sealing methods?
    The knife-edge mechanism creates a metal-to-metal seal by biting into a soft ductile gasket (copper or aluminum), achieving helium-leak-tight performance that far exceeds elastomer-based seals. This makes it ideal for ultra-high vacuum (UHV) environments where even the smallest leak is unacceptable.
    Q What bake-out temperature can these CF flanges withstand?
    These CF flanges are designed to withstand bake-out temperatures exceeding 150°C, which is essential for outgassing chamber walls and achieving ultra-high vacuum (UHV) conditions in demanding scientific and industrial applications.
    Q What stainless steel grades are used, and why does it matter?
    The receptacle housing is made from 304 or 316L stainless steel. These grades offer excellent corrosion resistance, high mechanical strength, and low outgassing rates — all critical properties for maintaining vacuum integrity and long-term reliability in harsh environments.
    Q Can these flanges be customized for non-standard dimensions or configurations?
    Yes. A key advantage of these CF flanges is the ability to customize both standard and non-standard vacuum flange structures and dimensions. This flexibility allows engineers to design solutions tailored to unique system requirements across a wide range of industries.
    Q What plug configurations are supported by this system?
    The system supports multiple plug configurations including single-ended plugs, double-ended plugs, and double-ended wiring forms. This versatility enables flexible system design to suit a wide variety of vacuum feedthrough and interconnect requirements.
    Q In which industries are these CF vacuum flanges most commonly used?
    These flanges are widely used across scientific research (particle accelerators, surface analysis), semiconductor manufacturing (CVD, MBE, plasma etching), space simulation (thermal vacuum chambers), and advanced analytical instrumentation (mass spectrometers, electron microscopes).

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