Front Ferrule Finish/Coating Colorless Dry Lubricant Fitting Material Steel Maximum Operating Pressure 4 100 psi Maximum Operating Temperature 800 Degrees F Specific Fitting Shape Front Ferrule Compatible Fitting Brands Swagelok Compatible Tube Outer Diameter 1 in Series A-LOK(R) Standards ASTM 31.3 Compatible Fitting Connection Type Compression Minimum Operating Temperature 20 Degrees F