To achieve a proper seal, the flare must be exact. SAE J514 defines the flare diameter, angle tolerance (37° ± 1°), and the radius at the transition from the tube to the flare.
Do not confuse SAE J514 with SAE J512. The latter covers 45-degree flare fittings, which are common in automotive fuel and brake lines, but are not interchangeable with the 37-degree style. Using a 45-degree nut on a 37-degree flare will cause a catastrophic leak.
SAE J514 is a standard that defines the requirements for hydraulic fittings and tubing used in hydraulic systems. The standard covers a wide range of topics, including:
The standard is widely used in various industries, including:
The choice of material affects the fitting's pressure rating and temperature range. JIC Fittings and The SAE J514 Standard | Tameson.com
The standard ensures that a fitting manufactured by Company A in Ohio will perfectly mate with a fitting made by Company B in Germany, provided both adhere to the J514 specification. This interoperability reduces leakage, enhances safety, and simplifies inventory management.
A: Yes. JIC (Joint Industry Council) fittings are the common name for the 37-degree flare fittings described in SAE J514.
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