Introduction to JIC Fittings


JIC Fitting is a selection of hydraulic fittings which is produced in accordance to the SAE J514 requirements. The acronym JIC stands for Joint Industry Council. It’s likewise known as the JIC 37 degrees flare fitting as it’s a thirty seven degrees flare seating surface. These fittings are used on oil hydraulic methods in several fields (fuel delivery, fuel power program, shipbuilding, mobile hydraulic equipment, etc…). A JIC fitting system has 3 components which make a tubing assembly: fitting, flare nut, and sleeve.


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


JIC frame and flare nut are available in exterior diameter (“OD) sizes between 1/8″ to one 2”. Sleeve has two specific reading measurements, metric measurement (mm) and inch outer diameter (“OD). Sleeve size can be bought from 3mm to 50mm and 1/8″ to 2”. Connecting sizes are specified by the corresponding outside diameter of the tubing for the various types of tube ends.

Functioning Pressure:

The standard functioning pressure of the fittings ranges from 1000 to 5000 psi for various sizes & connections. The minimum burst pressure is four times the working strain. The JIC fittings must be ready to withstand twice the working stress for a period of 1 minute without leakage or failure.

Remember to take note that the pressure rating of a same fitting may vary when it’s connected to various equipments.. For example, if a fitting with a minimal performing pressure is connected to a pipe, it will result in an overall much lower working strain. In all cases, consistently take into account the lowest pressure as the maximum working pressure of the product.

How does a JIC fitting works: For tube connections, the assembly treatment starts out of the preparation of the hose. To begin with, the nut and sleeve are inserted onto the end of a tube. Considering the use of a flaring tool, form the end of the conduit to 37 degrees. Then, firm up the nut by using a spanner till the nut is tight and also the sleeve grips upon the tube. In case the fittings are bench put together, the gripping action might be determined by revolving the tubing by hand as the nut is pulled down. When the tube could not be driven by hand, the sleeve has gripped onto the tube. If this happens,, tighten the nut by switching it one full turn. This might vary somewhat with different tubing materials, but for basic practice, it is a great rule to go by.

Configurations of JIC Fitting: Commonly made use of metaboost connection independent reviews – lowest price – types consist of: JIC/BSPP Male Connector, JIC/ NPT Male connector, JIC union, JIC/NPT Swivel Male Connector, JIC/BSPP Swivel Male Connector.

Brand of JIC Fittings:

HS Corporation is a Korean manufacturer specializing in JIC Fitting. Established in 1980, HS Corporation has over thirty years of specialized knowledge in manufacturing fittings.

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