Parker 6 P5ON-S Hex Plug 9/16-18 Male Thread 7200 Psi

Product Description

The PARKER 6 P5ON-S is a male straight thread O-ring hex plug designed to cap and seal hydraulic and fluid power lines in high-pressure industrial systems. Manufactured from zinc-plated steel, it provides corrosion resistance suitable for demanding service environments. The plug features a 9/16-18 UN/UNF-2A male thread and is rated to a maximum working pressure of 7,200 psi, with a standard pressure rating of 6,000 psi. The O-ring face seal connection type minimizes leak paths compared to tapered thread designs. This fitting is installed by hydraulic technicians, millwrights, and industrial maintenance professionals working on fluid power circuits, mobile equipment, and industrial machinery.

This hex plug is used to terminate unused ports in hydraulic manifolds, cylinders, pumps, valves, and related fluid power components. It is suited for both stationary industrial equipment and mobile hydraulic applications where reliable port sealing under sustained pressure is required. The zinc-plated steel construction is appropriate for general industrial environments where moderate corrosion protection is needed. Its compact overall length of 0.75 inches keeps installation clearance requirements low in tight manifold layouts.

Key Features

• Maximum working pressure of 7,200 psi for high-pressure hydraulic applications
• Standard pressure rating of 6,000 psi per SAE 090109A
• 9/16-18 UN/UNF-2A male straight thread O-ring connection minimizes leak potential
• Zinc-plated steel construction provides corrosion resistance in industrial service
• 11/16-inch hex size allows installation with standard hex wrenches
• Compact overall length of 0.75 inches suits tight port clearances

Compatibility

Designed as an OEM-style replacement or service fitting for hydraulic and fluid power systems requiring a 9/16-18 male straight thread O-ring hex plug conforming to SAE 090109A standards.

Installation Notes

Installation is performed by qualified hydraulic technicians or industrial maintenance personnel. De-pressurize and bleed down the hydraulic circuit fully before removing or installing any fitting. Inspect the O-ring for damage before installation and ensure the mating port face is clean and free of nicks or debris that could compromise the seal. Tighten to the port manufacturer's specified torque for the thread size; do not over-tighten, as this can damage the O-ring or distort the sealing face.