Table of Contents

JIC and flare fittings are indeed similar, but they are not the same due to the differences in their flare angles. The key differences between the two are as follows:

JIC fittings
JIC fittings
  1. Flare Angle:
    • JIC fittings use a 37° taper angle.
    • SAE (Society of Automotive Engineers) flare fittings use a 45° taper angle.
  2. Compatibility:
    • JIC male threads are designed to be used with JIC female threads, both of which have a 37° taper angle. The seal is formed at the 37° taper seat.
    • SAE male threads are meant to be used with SAE female threads, which feature a 45° taper angle. The seal is formed at the 45° taper seat.
  3. Interchangeability:
    • JIC and SAE flare fittings and tooling are not interchangeable. Attempting to mix them can result in leakage and an improper seal due to the different flare angles.
SAE flare fittings
SAE flare fittings

It’s essential to use the appropriate fittings and components that match the specific system requirements and standards to ensure a secure and reliable hydraulic connection. Mixing JIC and SAE fittings can lead to compatibility issues and potential leaks. Always confirm the fitting specifications before assembling hydraulic components to avoid any complications.

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