Options also include cleaned and bagged for oxygen service (medical gas)., Lead-free , Dezincification resistant , Manufactured by NIBCO 1-1/2 Copper DWV Repair Coupling NIBCO Copper Coupling NIBCO 3/4 In. X 1/2 In. Copper Pressure C X C Coupling With Stop 2-1/2 Inch Solder Coupling NIBCO W00960D Copper Pipe Coupling Without Stop, 1/2-In. CxC Simply applying pressure from a pressing tool tightens the O-ring onto the tube, ensuring a clean, watertight seal in seconds with no flame, solder or flux. The coupling has press connections and a dimple tube stop
