Sin Ling manufactures high-precision 37 degree flare fittings and JIC hydraulic fittings for high-pressure fluid transfer, industrial machinery, construction equipment, and automotive hydraulic systems. JIC fittings use a 37° metal-to-metal sealing surface, delivering excellent vibration resistance, pressure durability, and leak-free performance.

Our product range includes JIC male fittings, female flare connectors, adapters, unions, elbows, tees, reducers, and custom configurations designed to meet SAE J514 requirements.

We can support the line of ORB fittings and O-ring boss fittings according to your drawings, ensuring reliable sealing for systems requiring straight-thread, O-ring-based connections compliant with SAE J1926. These options include ORB hydraulic fittings, plugs, elbows, and port adapters engineered for demanding pressure applications.

For hybrid hydraulic systems, Sin Ling produces ORB to JIC fittings, enabling smooth transition between O-ring boss ports and JIC 37° flare connections commonly found in hydraulic manifolds, pumps, valves, and industrial fluid circuits.

All JIC and ORB components are CNC-machined in-house for accurate flare geometry, thread integrity, and long-term sealing reliability.

1. What are JIC fittings used for?

JIC fittings are used in hydraulic, industrial, and automotive systems requiring a strong 37° metal-to-metal seal capable of handling high pressure and vibration.

2. What is the difference between JIC and ORB fittings?

JIC uses a 37° flare sealing surface, while ORB uses straight threads and an O-ring seal. JIC is ideal for tube and hose connections; ORB is ideal for manifold or port sealing.

3. Do you offer ORB to JIC adapters?

Yes. Sin Ling can manufactures ORB to JIC fittings to allow smooth and leak-free transitions between ORB ports and JIC flare systems.

4. Are your JIC fittings compliant with SAE standards?

All JIC fittings are produced according to SAE J514, and all O-ring boss fittings follow SAE J1926 dimensional and sealing requirements.

5. Are custom JIC or ORB adapters available?

Yes. We support OEM and custom machining for special JIC adapters, ORB hydraulic fittings, manifold ports, and specialty transition fittings