IVP Spring Clamp Ring KF20, KF25, NW20, NW25 Flange Size, 304 Stainless Steel,
These KF-20 KF-25 Ideal Vacuum Products IVP Spring Clamp Rings are for vacuum fittings following ISO-KF standards and have a flange size of NW-25 KF25. 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 304 Stainless Steel.
KF-20/25 IVP Quick Clamping Stainless Steel Ring with blue plastic turning knob
ISO-KF Flange Size: NW-20, NW-25
Common Dimensions: A=2.36 in. (60mm), B=2.36 in. (60mm), C=1.89 in. (48mm)
