KF-25 High Vacuum Flange X FNPT

KF-25 High Vacuum Flange X FNPT KF-25 or NW25 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 from 1/4", 3/8", and 1/2" Female NPT threading which require thread sealant if they are installed to another NPT adapted fitting.