Spears 450 Series PVC Pipe Fitting, Plug, Schedule 40, 1/2" NPT Male Plug for closing the end of a pipe or fitting Male NPT threads for connecting to female NPT threaded pipes PVC for chemical and corrosion resistance, high strength, and less weight than fittings made from metal Maximum operating temperature of 140 degrees F Meets ASTM D1784 and D2466 standards for quality assurance, and certified by NSF International for potable water service