Chemraz 505 Chemical Centering Ring O-Ring Replacement, KF-25 Vacuum Fittings, ISO-KF Flange Size NW-25, KF25
These KF-25 vacuum fitting O-ring replacements are designed for ISO-KF standards with a size of NW-25. They are commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber O-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively.
These O-ring replacements are made of 505 Chemraz, a field-proven, universal compound having the broadest range of chemical resistance on the market. Chemraz 505 is ideal for processes taking place in subzero temperatures as well as for use in multi-substance plants or in mixed media. Chemraz 505 provides excellent performance in dynamic and static analytical equipment. Chemraz’s distinctive chemical composition makes it well suited for a wide range of applications such as HPLC, pneumatic tools and vacuum sealing. Because of its low compression set and high sealing force it provides better ability to handle temperature and pressure variations, shaft misalignment and O-ring shrinkage.
Chemraz 505 is often used as a standard compound and can be found in a variety of applications including acids, caustics, aldehydes, esters, ethers, aromatics, hot water, steam, amines, methanol, ketones, TBA and MTBE. Chemraz extends the reliability and life of your equipment in hostile conditions while protecting people and the environment from emissions. Chemraz 505 is well suited for applications requiring a temperature range from -22°F to 445°F (-30°C to 230°C).
Chemraz 505 KF-25 O-Ring Replacement for KF25 Centering Rings
ISO-KF Flange Size: NW-25
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