SS304 or SS316
KF flange size: NW10 to NW50
Barb end size in inch: 1/4",5/16", 3/8",1/2",1"
Barb end size in mm: 8mm, 10mm, 13mm, 16mm, 20mm, 25mm, 40mm, 50mm.
These adapter rubber hose nozzles are KF flange to rubber hose. The flange size follows ISO-KF standards. They are commonly used to make connections between ISO-KF fittings and rubber vacuum hoses. The ISO-KF flanges 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 Stainless Steel.