JIC (37° Flare)
The Society of Automotive Engineers (SAE) specifies a 37°
angle flare or seat be used with high pressure hydraulic
tubing. These are commonly called JIC couplings.
The JIC 37° flare male will mate with a JIC female only.*
The JIC male has straight threads and a 37° flare seat.
The JIC female has straight threads and a 37° flare seat.
The seal is made on the 37° flare seat.
Some sizes have the same threads as the SAE 45° flare.
Carefully measure the seat angle to differentiate.
*Note: Some C5, C5E and Lock-On couplings may
have dual machined seats (both 37° and 45° seats).