Parker 6 Klo-s Compression Tube Union Orfs Steel 3/8 in

Product Description

The PARKER 6 KLO-S is a steel compression tube union with O-Ring Face Seal (ORFS) end connections, designed for high-pressure hydraulic and fluid system applications. It joins two tube lines of the same outside diameter using UNF-threaded ORFS fittings, providing a leak-resistant connection rated to 9200 psi maximum working pressure. The steel construction delivers the durability required in demanding service environments. This fitting is typically installed by hydraulic system technicians, industrial maintenance professionals, and fluid power specialists working on mobile or stationary equipment.

This union fitting is suited for hydraulic lines, fluid transfer systems, and high-pressure plumbing circuits where a reliable inline tube-to-tube connection is needed. The ORFS design uses a flat-face port with an O-ring to create a positive seal, making it well suited for applications where vibration, pressure cycling, or leak-free performance is critical. It accommodates 3/8 inch outside diameter tubing and is commonly found in mobile hydraulic equipment, industrial machinery, and heavy-duty fluid systems.

Key Features

• O-Ring Face Seal (ORFS) end connections for leak-resistant, high-integrity sealing
• Rated to 9200 psi maximum working pressure
• Steel construction for strength and durability in high-pressure service
• UNF thread standard for compatibility with standard ORFS port fittings
• 3/8 inch tube outside diameter union configuration
• Sold as a single unit (package quantity of 1)

Compatibility

Designed as an OEM-style replacement or new-installation union fitting for hydraulic and fluid power systems using 3/8 inch OD tubing with ORFS connections and UNF thread standard.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power specialist. Depressurize and isolate the hydraulic circuit completely before disconnecting any lines or fittings. Inspect the O-ring sealing surface for nicks or contamination before assembly, and ensure the O-ring is properly seated to achieve the rated seal. Follow applicable industry standards for hydraulic fitting torque and assembly procedures as specified by the equipment manufacturer.