Hydraulic hose fittings play a critical role in ensuring that hydraulic systems operate effectively and safely. These fittings serve as the connection points between hoses, pumps, cylinders, and valves, transmitting high-pressure hydraulic fluid through the system. The correct selection and identification of hydraulic hose fittings are crucial for system performance and safety.

O-Ring Boss (ORB) fittings are a type of hydraulic fitting commonly used to connect tubing or hoses to a port. ORB fittings have a flat sealing surface with an O-ring that creates a tight seal when compressed. The O-ring sits in a groove on the face of the fitting, and when the fitting is tightened, it presses the O-ring against the mating surface to form a leak-tight seal.

National Pipe Tapered (NPT) fittings are another type of threaded connection commonly used in plumbing, fluid, and gas systems. NPT fittings have tapered threads, meaning the threads are designed to tighten as the fitting is screwed into place. As the threads tighten, the fit between the two parts becomes more compressed, creating a seal.