Parker 12 P5ON-S Hex Plug 6000 Psi Male Thread O-ring

Product Description

The PARKER 12 P5ON-S is a male straight thread O-ring hex plug designed to cap or close off hydraulic and fluid system ports. Rated to 6000 psi maximum working pressure, it is manufactured from zinc-plated steel for corrosion resistance in demanding industrial environments. The plug features a 1-1/16-12 UN/UNF-2A male thread with an O-ring sealing interface, providing a leak-resistant closure without relying on thread deformation. With a 1-1/4 inch hex and an overall length of 1-1/16 inches, it is sized for standard wrench installation. Hydraulic technicians, fluid power mechanics, and industrial maintenance professionals install this fitting in production machinery, mobile equipment, and hydraulic power units.

This plug is suited for use in hydraulic systems, lubrication circuits, and industrial fluid lines where a straight thread O-ring port closure is specified. It is a common service item used during system reconfiguration, pressure testing, or port blocking on manifolds, cylinders, pumps, and valves that call for a 1-1/16-12 male straight thread O-ring connection. The zinc-plated finish provides a layer of corrosion protection appropriate for shop and light outdoor environments.

Key Features

• 6000 psi maximum working pressure rating for high-pressure hydraulic applications
• Male straight thread O-ring (MSTO) connection type provides positive, leak-resistant port sealing
• 1-1/16-12 UN/UNF-2A male thread for precise thread engagement
• Zinc-plated steel construction resists corrosion in industrial service conditions
• 1-1/4 inch hex drive for installation with standard open-end or combination wrenches
• Meets SAE 090109A standards for straight thread O-ring port fittings

Compatibility

Designed as an OEM-style replacement or service fitting for hydraulic and fluid power systems specifying a 1-1/16-12 male straight thread O-ring hex plug per SAE 090109A.

Installation Notes

Installation is performed by qualified hydraulic or fluid power technicians. Depressurize and isolate the hydraulic circuit completely before removing or installing port plugs. Inspect the O-ring for damage before assembly and lubricate it lightly with clean system fluid. Torque to the equipment manufacturer's specification for the port size — do not over-tighten, as this can damage the O-ring or the port seat.