Union Application Air Fitting Side A Connection Type Male O-Ring Face Seal Fitting Side B Connection Type Male O-Ring Face Seal Finish/Coating Zinc Nickel-Plated Fitting Material Steel Fitting Side A Tube Outer Diameter 3/4 in Fitting Side B Tube Outer Diameter 3/4 in Maximum Operating Pressure 6 000 psi Maximum Operating Temperature 500 Degrees F Overall Length 1 27/32 in Specific Fitting Shape Straight Connector Compatible Fitting Brands Seal-Lok Series Seal-Lok