Also known as KF, QF, and NW fittings, these fittings are for high-vacuum applications, such as vacuum coating and heat treating, leak testing, and analyzing gases.

When cleanliness is crucial to your application, choose these fittings that are individually cleaned and bagged to prevent contamination.

Choose these metal fittings when you need better durability than our plastic push-to-connect fittings.

Use these fittings to make leak-resistant connections without threading or soldering. Slide them over tubing and turn the end nuts to compress the gasket.

Weld these nuts to round uncoated metal tubes to attach threaded parts, such as rod ends.