The black PP socket 90-degree elbow features thermo-seal female socket connections to change the direction of flow. Please refer to Chemtrol technical data sheets, chemical resistance guides and catalogs for engineering and installation information. Chemtrol® black polypropylene demonstrates excellent tensile strength, UV stability and versatile chemical resistance properties, making it the material of choice for harsh industrial, outdoor and underground applications. Chemtrol® PP fittings aremore lightweight, easy to install and maintenance-free. less