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Introduction to JIC Fittings


JIC Fitting is a range of hydraulic fittings that’s produced in accordance to the SAE J514 standards. The acronym JIC stands for Joint Industry Council. It is likewise known as the JIC thirty seven degrees flare fitting as it has a thirty seven degrees flare seating surface. These fittings are used on oil hydraulic systems in fields which are a lot of (fuel delivery, etc…), mobile hydraulic equipment, shipbuilding, fuel power program. A JIC fitting system has three components that make a tubing assembly: installing, flare nut, and sleeve.


Materials used-to fabricate JIC fittings include stainless steel as well as carbon steel SS316L.


JIC body and flare nut are obtainable in exterior diameter (“OD) sizes between 1/8″ to 1 2”. Sleeve has 2 different reading measurements, metric measurement (mm) & inch exterior diameter (“OD). Sleeve size can be purchased from 3mm to 50mm and 1/8″ to 2”. Connecting sizes are designated by the corresponding outside diameter of the tubing for the numerous kinds of tube ends.

Functioning Pressure:

The standard functioning stress of the fittings ranges from 1000 to 5000 psi for several sizes & contacts. The minimum burst pressure is 4 times the working strain. The JIC fittings should be ready to withstand twice the working strain for a period of 1 minute with no leakage or failure.

Please take note that the strain rating of a same fitting might vary when it’s connected to different equipments.. For example, if a fitting with a low working pressure is connected to a pipe, it is going to result in a general even reduce functioning pressure. In all cases, consistently take into account the lowest pressure as the optimum working pressure of the system.

How does a JIC fitting works: For tube connections, the assembly operation starts from the preparation of the hose. First, the nut as well as sleeve are inserted onto the conclusion of a tube. With the use of a flaring tool, create the conclusion of the tube to 37 degrees. Next, firm up the nut by making use of a spanner till the nut is firm and the sleeve grips upon the tube. If the fittings are bench assembled, the gripping action can be driven by rotating the tubing using a pair of scissors as the nut is pulled down. When the tube could no longer be driven by hand, the sleeve has gripped onto the tube. If this occurs,, firm up the nut by turning it one full turn. This might vary somewhat with different tubing substances, but for general practice, it’s a very good rule to adhere to.

Configurations of JIC Fitting: Commonly made use of connection sorts comprise of: JIC/BSPP Male Connector, JIC/ NPT Male connector, JIC union, alpilean reviews company (continue reading this) JIC/NPT Swivel Male Connector, JIC/BSPP Swivel Male Connector.

Brand of JIC Fittings:

HS Corporation is a Korean manufacturer specializing in JIC Fitting. Started in 1980, HS Corporation has more than thirty years of specialised expertise in manufacturing fittings.

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