Copper Press Fittings are NSF listed, lead free and feature an EPDM O-ring. Utilizing a hydraulic press tool, a watertight seal can be made in seconds without flame, solder, or flux. Each press fitting comes standard with leak-before-press technology to easily identify a fitting that has not been pressed. Connections can be made in wet conditions reducing project downtime. These fittings are available in sizes from 1/2 in. to 1 in. and are compatible with all major hydraulic press tools.