Tube Plug Application Chemicals Gases Non-Potable Water Oils Fitting Connection Type Compression Fitting Material Stainless Steel Fitting Tube Size Outer Diameter 4 mm Material Grade 316 Maximum Operating Pressure 10 300 psi Maximum Operating Temperature 1 200 Degrees F Specific Fitting Shape Plug System of Measurement Metric Compatible Fitting Brands Let-Lok Fitting Thread Size 3/8-20 Series Let-Lok Standards ASME ASTM-A CE MIL-F-18866 SAE