Parker 8 Hlo-s Compression Tube Union Orfs Steel 1/2 in

Product Description

The PARKER 8 HLO-S is a compression tube union with an O-Ring Face Seal (ORFS) end connection, constructed from steel for use in high-pressure hydraulic and fluid power systems. This fitting joins two tube ends of equal outside diameter within a single inline body, maintaining a leak-free seal through a face-seating O-ring rather than a metal-to-metal taper. Rated to 9200 psi maximum working pressure, it is suited for demanding applications where vibration or pressure spikes could compromise conventional flare or compression joints. Licensed hydraulic technicians and fluid power specialists are the typical installers. The UNF thread standard ensures broad tool compatibility with standard hydraulic assembly equipment.

This union fitting is designed for use in mobile hydraulic systems, industrial fluid power circuits, and high-pressure tubing assemblies where a straight inline union connection is required. The ORFS design is commonly specified in construction equipment, agricultural machinery, and industrial hydraulic lines where reliable sealing under high dynamic pressure is critical. It accepts 1/2 inch outside diameter tubing on both ends, making it a direct inline connector for same-size tube runs.

Key Features

• ORFS end connections provide a face-seal design that resists leaks under high pressure and vibration
• Maximum working pressure of 9200 psi suits demanding hydraulic applications
• Steel construction offers durability in hydraulic fluid environments
• 1/2 inch tube outside diameter on both ends for inline union connections
• UNF thread standard for compatibility with standard hydraulic tooling
• Single-piece union body simplifies tubing runs without additional adapters

Compatibility

Designed as an OEM-style replacement or direct-fit component for hydraulic tubing systems utilizing 1/2 inch outside diameter tube with ORFS end connections and UNF thread standards.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power specialist. Depressurize and isolate the hydraulic circuit fully before disassembly or fitting installation. Inspect the O-ring sealing face for nicks or contamination before assembly, as face-seal integrity depends on a clean, undamaged seating surface. Torque to the fitting manufacturer specification using proper hydraulic assembly tooling; do not overtighten, as this can damage the O-ring or distort the sealing face.