Parker 10 HP5ON-S Hex Socket Plug 7/8-14 6000 Psi

Product Description

The PARKER 10 HP5ON-S is a hex socket plug designed to seal hydraulic and fluid power lines using a male straight thread O-ring connection. Rated to 6,000 psi maximum working pressure, it is built from zinc-plated steel for corrosion resistance in demanding industrial environments. The plug features a 7/8-14 male thread and accepts a 3/8-inch hex key for installation and removal. It is a single-piece, compact fitting with an overall length of 0.625 inches, making it suitable for tight plumbing configurations. Hydraulic technicians and fluid power mechanics rely on this style of plug to cap open ports cleanly and maintain system pressure integrity.

This plug is used in hydraulic systems, fluid power circuits, and industrial plumbing where open ports must be sealed without leakage under high pressure. The male straight thread O-ring (MSTO) configuration provides a leak-free face seal when torqued against a mating port. Typical applications include hydraulic manifolds, cylinders, pumps, valves, and other components with SAE straight thread O-ring ports. It is suited for both stationary and mobile hydraulic equipment across industrial, agricultural, and construction sectors.

Key Features

• 6,000 psi maximum working pressure for high-pressure hydraulic service
• Male straight thread O-ring connection provides a reliable face seal at the port
• 7/8-14 male thread fits standard SAE straight thread O-ring ports
• Zinc-plated steel construction resists corrosion in industrial environments
• 3/8-inch hex socket drive for installation with a standard hex key
• Compact overall length of 0.625 inches suits tight plumbing configurations

Compatibility

Designed as an OEM-style replacement or service plug for hydraulic components and fluid power assemblies equipped with SAE male straight thread O-ring ports sized 7/8-14.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power mechanic. Depressurize and isolate the hydraulic system completely before removing or installing any fittings. Ensure the O-ring is seated properly and lubricated before threading the plug into the port by hand, then tighten to the appropriate torque using a 3/8-inch hex key. Inspect the port thread condition before installation to avoid cross-threading or sealing failure.