ORB O-Ring Boss Fittings

ORB (O-Ring Boss) fittings combine straight UN/UNF threads with an O-ring seal. The male fitting screws into a female port until the O-ring at the base of the threads compresses into a machined chamfer on the port, creating a leak-free seal. Shares thread specifications with JIC, differing only in sealing method and application. Extensively used in mobile hydraulic equipment and industrial applications where space constraints require compact fittings with reliable sealing.