IVP Spring Clamp Ring KF10, KF16, NW10, NW16 Flange Size, 304 Stainless Steel, These KF-10 KF-16 Ideal Vacuum Products IVP Spring Clamps are for vacuum fittings following ISO-KF standards and have a flange size of NW-16 KF16. 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-10/16 Quick Clamping Stainless Steel Ring with blue plastic turning knobISO-KF Flange Size: NW-10, NW-16Common Dimensions: A=1.73 in. (44mm), B=1.81 in. (46mm), C=1.18 in. (30mm)

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 knobISO-KF Flange Size: NW-20, NW-25Common Dimensions: A=2.36 in. (60mm), B=2.36 in. (60mm), C=1.89 in. (48mm)

IVP Spring Clamp Ring KF32, KF40, NW32, NW40 Flange Size, 304 Stainless Steel, These KF-32 KF-40 Ideal Vacuum Products IVP Spring Clamps are for vacuum fittings following ISO-KF standards and have a flange size of NW-40 KF40. 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-32/40 Quick Clamping Stainless Steel Ring with blue plastic turning knobISO-KF Flange Size: NW-32, NW-40Common Dimensions: A=2.87 in. (73mm), B=2.95 in. (75mm), C=2.48 in. (63mm)