Compression Sleeve Finish/Coating Zinc Trivalent Fitting Material Steel Maximum Operating Pressure 3 250 psi Maximum Operating Temperature 450 Degrees F Overall Length 7/16 in Specific Fitting Shape Ferrule System of Measurement Imperial Compatible Fitting Brands Airway Ferulok Compatible Tube Outer Diameter 5/8 in Series 7000 Series Ermeto Color Clear Compatible Fitting Connection Type Compression Minimum Operating Temperature -30 Degrees F