Seal Plug Application Air Inert Gases Non-Combustible Gases Potable Water Fitting Connection Type NPTF Fitting Material Brass Fitting Tube Size Outer Diameter 1/4 in Maximum Operating Pressure 2 800 psi Maximum Operating Temperature 250 Degrees F Specific Fitting Shape Plug System of Measurement Imperial Fitting Thread Size 11/16-20 Series Compress-Align Standards FSC REACH Product Declaration RoHS Compatible Tube Material Aluminum Copper FEA PFA TFE Thermoplastic