OEM Agilent Varian Flex Coupling, Braid, NW40, KF-40, 12 inches Long, SS
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These KF-40 Bellows Flex Coupling vacuum fittings follow ISO-KF standards and have a flange size of KF 40 NW-40. 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 corrosive resistant stainless steel.
KF-40 Bellows Hose Braid Flex Coupling
ISO-KF Flange Size: NW-40
Spring Rate: 44 lb/in
Common Dimensions: A = 12" (305mm)
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