Parker 8-6 Hlo-s Compression Tube Union Orfs Steel

Product Description

The PARKER 8-6 HLO-S is a compression tube union with an O-Ring Face Seal (ORFS) end connection, manufactured from steel. It is designed to join two hydraulic or fluid-power lines in a leak-resistant, high-pressure assembly. The union accommodates a 1/2 inch by 3/8 inch tube outside diameter configuration and is rated for a maximum working pressure of 9200 psi. The ORFS interface creates a positive metal-to-metal contact backed by an elastomeric O-ring, significantly reducing the potential for leakage under pressure cycling. This fitting is typically installed by hydraulic technicians, fluid-power mechanics, and maintenance professionals working on industrial or mobile equipment systems.

This fitting is suited for hydraulic systems, fluid-power circuits, and high-pressure tubing assemblies where a reliable tube-to-tube union connection is required. The UNF thread standard makes it compatible with standard ORFS fittings and port configurations common in mobile hydraulics and industrial fluid-power equipment. It is appropriate for use in applications where vibration resistance and leak-free performance are critical design requirements.

Key Features

• ORFS end connections provide a leak-resistant seal under high-pressure and vibration conditions
• Steel construction for durability in demanding hydraulic service environments
• Rated to 9200 psi maximum working pressure
• Accepts 1/2 inch by 3/8 inch tube outside diameter configuration
• UNF thread standard for compatibility with standard ORFS port connections
• Union design allows straight inline joining of two tube lines

Compatibility

Designed as an OEM-style replacement or service fitting for hydraulic and fluid-power tubing assemblies using ORFS end connections and UNF thread standards.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid-power mechanic. Depressurize and isolate the hydraulic circuit completely before disassembling any fittings or lines. Inspect the O-ring seating surface for damage or contamination before assembly, as surface defects will compromise the ORFS seal. Follow the equipment manufacturer's assembly guidelines for proper fitting engagement and do not over-torque the connection.