Blank Off Flange Yellow Brass, KF-50 Vacuum Fittings, ISO-KF Flange Size NW-50

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Blank Off Flange, Yellow Brass KF-50, Vacuum Fittings, Size ISO NW-50 These KF-50 Yellow Brass Blank Flange fittings follow ISO-KF standards and have a flange size of NW-50. 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 elastomer 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. They are made of Yellow Brass. WARNING: Brass alloys contain Zinc. Zinc will outgas from brass under certain combinations of elevated temperature and high-vacuum. System damage may occur if these conditions are present. Blank Off Flange Yellow Brass ISO-KF Flange Size: NW-50 Common Dimensions: A=.20 (5mm)