Centering Ring
Flange centering rings, also known as centering rings, are vital components used in vacuum systems and flange connections to ensure precise alignment, secure assembly, and reliable sealing between two flanges. These components play a critical role in maintaining vacuum-tight seals, especially in high and ultra-high vacuum applications.Key features of flange centering rings include:
1. Alignment: Flange centering rings are equipped with a precisely machined center hole that aligns with the corresponding flange. This alignment ensures that the two flanges come together accurately during the assembly process, contributing to a stable and secure connection.
2. Sealing: Many centering rings incorporate an elastomeric O-ring, which is designed to create an airtight seal when the flanges are tightened together. This O-ring serves as a reliable barrier, effectively preventing leaks and maintaining the integrity of the vacuum system.
3. Material: Flange centering rings are typically constructed from materials suitable for vacuum environments, such as stainless steel, aluminum, or other vacuum-grade materials. The choice of material depends on the specific requirements of the application, including factors like chemical compatibility and durability.
4. Standardization: These centering rings are available in a variety of sizes and types to match different flange standards, including KF, CF, ISO, or ANSI flanges. The standardization of sizes ensures compatibility with specific flange systems, making it easier for engineers and technicians to select the appropriate centering ring for their particular application.
In addition to these general features, various specialized types of centering rings and O-rings are available for specific vacuum system needs, especially in connection with KF (Klein Flange) and ISO (International Organization for Standardization) flanges:
1. KF Centering Ring, O-ring: Designed specifically for KF flanges, this centering ring incorporates an integrated O-ring to create a secure and airtight seal when connecting KF flanges.
2. KF Centering Ring, O-ring, Outer Ring: Similar to the previous type, but with the addition of an outer ring for enhanced stability and sealing performance.
3. KF Screened Centering Ring, O-ring: This specialized centering ring features a screened or mesh structure, in addition to an O-ring, which can capture particulates and prevent contamination within the vacuum system.
4. ISO Centering Ring: Tailored for ISO flanges, which are commonly used in vacuum applications, these rings ensure proper alignment and sealing in ISO flange connections.
5. ISO Centering Ring with O-ring: An ISO centering ring with an integrated O-ring, offering a reliable and leak-tight seal when connecting ISO flanges.
6. ISO Centering Ring: Likely referring to a basic ISO centering ring, providing alignment and sealing for ISO flange connections.
These centering rings and O-rings are essential components for achieving and maintaining a vacuum-tight seal, precise alignment, and secure assembly between flanges in vacuum systems. The choice of centering ring type depends on specific application requirements, such as the level of vacuum, potential contamination concerns, and the type of flange system being used, whether it's KF or ISO.



