KF-40 clamps, also called QC (quick connect) or QF (quick flange) clamps, are used to connect KF-40 flanges wherever KF-40 vacuum lines meet, including pump connections, valves, chambers and process lines. LoCo Science carries KF-40 clamps in both 304 stainless steel and aluminum. All LoCo Science clamps are sold as a set with a 304 stainless centering ring and Viton gasket in the package.
Which KF-40 clamp do I need?
- Join two KF-40 flanges: One KF-40 clamp and centering ring set per joint.
- Replace a worn centering ring: Spare rings are on the KF Centering Rings page.
Frequently asked questions
Does the KF-40 clamp come with a centering ring?
Yes. Every LoCo KF-40 clamp is sold as a set with one KF-40 centering ring.
Is a KF40 clamp the same as an NW40 clamp?
Yes. KF40 and NW40 are two names for the same size, so this clamp fits flanges labeled either way.
