Parker 8 P5ON-S Hex Plug 3/4-16 Male Thread 6000 Psi

Product Description

The PARKER 8 P5ON-S is a male straight thread O-ring hex plug designed for use in high-pressure hydraulic and industrial fluid systems. It seals a port by threading directly into a female UN/UNF-2A straight thread port, with the O-ring providing a positive, leak-free face seal. Rated to a maximum working pressure of 6,000 psi, this plug is built for demanding service where reliable port closure is required. The 7/8-inch hex drive allows installation with standard open-end or box-end wrenches. Overall length is 3/4 inch. Licensed hydraulic technicians and industrial pipefitters install this type of fitting as part of system maintenance, circuit isolation, or port capping during equipment assembly.

This plug is suited for hydraulic power units, mobile equipment, industrial machinery, and other systems using SAE straight thread O-ring port connections conforming to SAE standard 090109A. It is appropriate for use in both new plumbing and retrofit applications where an open port must be sealed at operating pressures up to 6,000 psi. The straight thread O-ring design eliminates the leakage risk associated with tapered thread connections, making it a preferred choice for critical high-pressure circuits.

Key Features

• Rated to 6,000 psi maximum working pressure for high-pressure hydraulic service
• Male straight thread O-ring connection provides a positive, leak-free face seal
• Thread size 3/4-16 UN/UNF-2A for compatibility with standard SAE straight thread ports
• 7/8-inch hex size allows installation with common hand tools
• Compact 3/4-inch overall length suits tight-clearance installations
• Conforms to SAE standard 090109A

Compatibility

Designed for use in hydraulic and industrial fluid system ports with 3/4-16 UN/UNF-2A female straight thread O-ring port connections per SAE 090109A.

Installation Notes

Installation is typically performed by a licensed hydraulic technician or industrial pipefitter. Before installing or removing any hydraulic plug, fully depressurize the system and verify zero pressure at the port. Clean the port and inspect the O-ring for damage before installation. Do not overtighten; use a torque wrench and follow the equipment manufacturer's port specifications for straight thread O-ring fittings.