Plug Application Potable Water Fitting Connection Type Tube Stem Fitting Material Acetal Fitting Tube Size Outer Diameter 3/16 in Maximum Operating Pressure 145 psi Maximum Operating Temperature 149 Degrees F Specific Fitting Shape Plug Includes Pre-Applied Thread Sealant No Color Gray Standards FDA Approved NSF/ANSI 51 NSF/ANSI 61 Compatible Tube Material Brass Copper Nylon Polyethylene Polyurethane PVC Steel Minimum Operating Temperature 68 Degrees F