KF Flange x FNPT Adapter
KF- or NW Vacuum fittings are designed for Ultra-High-Vacuum applications and are made out of 304 stainless steel. These fittings require a special gasket with metal centering ring to not allow over compression of the gasket. These fittings have female NPT threads that come in a variety of sizes, Female NPT threading which require thread sealant if they are installed to another NPT adapted fitting.