JIC hydraulic fitting is the most popular type of hydraulic adapter fittings, in USA and Canada. JIC is joint industry council define a 37 degree flare fittings, it is used in fuel delivery and hydraulic power applications. JIC system consist of male jic fittings seat female jic fitting with swivel nut, to inch seamless tubes.
These fittings are capable of providing leakproof, full flow connections in hydraulic systems operating at working pressures, is defined by SAE J514 and MIL-DTL
18866 standards, the six sections as follows:
Section 1-37 Degree Flare Tube Fittings
Section 2-Flareless Tube Fittings
Section 3-O-ring Plugs (for O-ring Ports see SAE J1926)
Section 4—Hydraulic Pipe Fittings (formerly SAE J926)
Section 5-Adapter Unions (formerly in SAE J516)
Section 6-Tables for Calculating Dimensions on Special Sizes