Parker 10 Klo-s Tube Union O-ring Face Seal 5/8 in 6000 Psi

Product Description

The PARKER 10 KLO-S is a compression tube union with O-Ring Face Seal (ORFS) end connections, built from steel for use in high-pressure fluid and hydraulic line applications. It joins two tube ends of 5/8 inch outside diameter in a straight union configuration. The ORFS design provides a leak-resistant metal-to-metal contact sealed by an O-ring at the face, making it well suited for systems where vibration or pressure cycling could compromise standard compression or flare fittings. Working pressure is rated to 6000 psi. This fitting is installed by licensed hydraulic technicians, pipefitters, and fluid power specialists working on mobile or industrial hydraulic systems.

This union is used in high-pressure hydraulic plumbing, mobile equipment, and industrial fluid power circuits where a straight tube-to-tube connection is required. The UNF thread standard makes it compatible with standard inch-series ORFS port and fitting hardware. Typical install scenarios include fabricating or repairing hydraulic lines on construction equipment, agricultural machinery, and industrial presses where a reliable, vibration-resistant union is required.

Key Features

• O-Ring Face Seal (ORFS) end connections for leak-resistant performance under high pressure and vibration
• 6000 psi maximum working pressure rating
• 5/8 inch tube outside diameter for both ends
• Steel construction for durability in demanding hydraulic environments
• UNF thread standard compatible with standard inch-series hydraulic hardware
• Straight union configuration for in-line tube-to-tube connections

Compatibility

Designed as an OEM-style replacement or new-installation fitting for high-pressure hydraulic and fluid power systems using 5/8 inch OD tubing with O-Ring Face Seal end connections and UNF threading.

Installation Notes

Installation should be performed by a qualified hydraulic technician or pipefitter. Depressurize and isolate the hydraulic circuit completely before disassembling any fittings or tubing. Inspect the O-ring for damage before assembly and ensure the face seal surfaces are clean and free of debris. Tighten fittings to the fitting manufacturer's recommended procedure for ORFS hardware; do not overtighten, as this can damage the sealing face or O-ring.