Compression Fitting Union, Application Compressed Natural Gas, Fuels, Gases, Hydrogen, Liquids, Oils, Petroleum Oil, Steam, Fitting Side A Connection Type Compression, Fitting Side B Connection Type Compression, Fitting Material Stainless Steel, Fitting Side A Tube Outer Diameter 3/8 in, Fitting Side B Tube Outer Diameter 3/8 in, Material Grade 316, Maximum Operating Pressure 6, 600 psi, Maximum Operating Temperature 649 Degrees C, Overall Length 2 15/32 in