They are suitable for a wide range of uses, including drain, waste, and vent (DWV) systems, as well as general-purpose plumbing connections where a flexible joint is required.
Parker 207P-8 Coupling Brass Dryseal Pipe Fitting, 1/2 In Female Npt X 1/2 In
& Recepticles. Electrical Outlets. Light Industrial. and Enclosures. Electrical Boxes. General Purpose. & Industrial.