This GRAINGER APPROVED hex bushing is designed with 304 stainless steel for good corrosion resistance. Compatible with stainless steel Schedule 40 pipe For use with air, water, oil, natural gas, and steam Item: Hex Bushing Pipe Fitting Material: 304 Stainless Steel Fitting Schedule/Class: Class 150 Pipe Size - Pipe Fitting: 1-1/2" x 3/8" Fitting Connection Type: MNPT x FNPT Max. Pressure: 300 psi Max. Steam Pressure: 150 psi Outside Dia.: 2-1/32" Standards: Material Conforms To ASTM-A-351, Threads Conform To ANSME B1.20.1, Meets MSS-SP-114 Class 150 Pressure Ratings