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The PARKER 6-4 C5OLO-S is a compression tube male elbow fitting designed for high-pressure hydraulic and fluid system applications. It connects a 3/8 inch outside diameter compression tube to a male port using an O-Ring Face Seal (ORFS) connection on one end and an SAE O-Ring Boss (SAE-ORB) thread on the other. The fitting uses a 7/16-20 UNF thread standard and is rated for a maximum working pressure of 6000 psi. Constructed from zinc-plated steel, it offers corrosion resistance suited to industrial and mobile equipment environments. Licensed hydraulic technicians and fluid power specialists typically install this type of fitting during system assembly or repair.
This male elbow fitting is used in hydraulic lines, fluid conveyance systems, and mobile equipment where a 90-degree directional change is needed between a compression tube and an O-ring boss port. The ORFS end provides a leak-resistant metal-to-metal face seal with an O-ring, making it well suited for high-pressure circuits where positive sealing is critical. Typical applications include construction equipment, agricultural machinery, industrial hydraulic power units, and similar systems requiring reliable tube-to-port connections at elevated pressures.
Designed as an OEM-style compression tube male elbow fitting compatible with hydraulic and fluid power systems using 3/8 inch OD tubing and SAE O-Ring Boss ports with 7/16-20 UNF threads.
This fitting is typically installed by licensed hydraulic technicians or fluid power specialists. Depressurize and isolate the hydraulic circuit completely before removing or installing any fitting. Inspect the O-ring sealing surfaces for damage or contamination prior to assembly, and ensure the O-ring is properly seated before tightening. Follow applicable industry standards such as SAE J1453 for ORFS fittings when assembling and torquing connections.
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