ISO HV Centering Rings (Al)

ISO HV Centering Rings (Al): Lightweight Sealing Solutions for ISO-K and ISO-F High-Vacuum Flanges

ISO HV Centering Rings (Al) are essential sealing components used to join ISO-K and ISO-F flanges in high-vacuum (HV) systems. These rings include both the centering structure and the integrated elastomeric o-ring, forming the interface that compresses between two ISO-standard flanges to ensure a leak-tight vacuum seal.

Designed in accordance with ISO specifications for Large ISO flange systems, these centering rings are compatible with both clamp-type (ISO-K) and bolt-type (ISO-F) flange interfaces. Whether for chamber ports, foreline connections, or modular vacuum lines, ISO HV Centering Rings (Al) deliver consistent performance in a wide range of vacuum applications.

Key Features of ISO HV Centering Rings (Al):

• ISO Flange Compatibility
  Compatible with ISO-K (clamp) and ISO-F (bolt) flanges, enabling universal use across HV infrastructure.

• Material Configurations

  • Fully Aluminum: Lightweight and corrosion-resistant, ideal for clean environments and portable systems.

  • Hybrid: Stainless steel inner ring with an aluminum outer ring for enhanced structural strength while minimizing mass.

• Integrated Elastomeric O-Rings
  Supplied with standard FKM (Fluorocarbon/Viton®) or Buna-N o-rings. Neoprene is available upon request for specific chemical or temperature compatibility needs.

• Vacuum Sealing Performance
  Designed for use in systems operating at pressures down to 10⁻⁸ Torr, with temperature ratings dependent on o-ring material (typically 0 °C to 120–200 °C).

• Low Outgassing and Reusability
  All centering rings are manufactured and cleaned to vacuum-grade standards, with smooth finishes to reduce outgassing and support reusability in serviceable systems.

These centering rings are most commonly used in:

• Vacuum coating chambers

• Analytical instrumentation

• Research-grade HV systems

• Semiconductor and materials processing lines

• Cleanroom-compatible vacuum assemblies

ISO HV Centering Rings (Al) are available in all standard ISO sizes including ISO63, ISO100, ISO160, ISO200, ISO250, and ISO320, with precise machining to ensure proper flange alignment and uniform sealing pressure. TFM also provides centering rings with mesh screens for pump inlet filtration and with custom o-ring compounds upon request (e.g., EPDM, Chemraz®, Silicone).

In summary, ISO HV Centering Rings (Al) provide a lightweight, versatile, and vacuum-compliant solution for sealing ISO-K and ISO-F flange joints. Their modular design, material options, and elastomer compatibility make them a trusted choice for engineers and technicians across industrial, research, and OEM vacuum systems.

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