JJIC (Joint Industry Council) connectors, also known as SAE 37° flare fittings, are a standardized type of hydraulic fluid connector primarily used in high-pressure systems. Their defining feature is a 37-degree flared seating surface on the male fitting that matches a corresponding 37-degree cone on the female part or flared tubing. This geometry creates a high-integrity, metal-to-metal seal that eliminates the need for elastomeric O-rings, which can degrade over time. These connectors typically consist of three main components: a body with a 37-degree nose, a flare nut, and a sleeve that helps distribute compressive loads during assembly.
JIC connectors are governed by the SAE J514 and ISO 8434-2 standards. They are favored for their exceptional versatility and reliability under extreme temperatures and vibration. One of their most significant advantages is their reusability; they can be disconnected and reconnected multiple times without compromising the seal, making them ideal for equipment that requires frequent maintenance or field repairs. While they are visually similar to SAE 45-degree flare fittings, they are not interchangeable due to the difference in flare angles, which would prevent a proper seal and likely lead to system failure under pressure.
Discover the wide range of industries and applications where JIC Connectors delivers exceptional performance and reliability.
JIC fittings have been a part of hydraulic systems for industries ranging from agriculture, and manufacturing to construction as well.
JIC connectors are common in aircraft hydraulic systems and fuel lines due to their durable nature.
Fuel, oil and hydraulic systems in automobiles, trucks, heavy machineries etc use JIC connectors.
They are also commonly used in marine applications (such as ships and offshore platforms) where salty conditions demand highly corrosion resistant hardware along with zero leak fittings.