Parker 1/2 Ff-s Hex Plug 6000 Psi Mnptf 1/2 Inch

Product Description

The PARKER 1/2 FF-S is a straight hex plug designed for industrial pipe and fluid system applications. It accepts a 1/2-inch MNPTF (male national pipe thread fuel) connection and is rated to a maximum working pressure of 6,000 psi, making it suitable for high-pressure hydraulic and pneumatic circuits. The overall length measures 1-7/8 inches with a 7/8-inch hex for standard wrench engagement. This plug is used to cap or block off a port in a manifold, valve body, or fitting assembly. Plumbers, pipefitters, and fluid power technicians install this type of fitting during system maintenance, pressure testing, or permanent port closure.

This hex plug is appropriate for industrial fluid power systems, hydraulic lines, and high-pressure pneumatic assemblies where a reliable port seal is required. The MNPTF thread form provides a pressure-tight seal on fuel and hydraulic service lines. Typical installations include manifold block port closures, test-point blanking, and system reconfiguration where an unused outlet must be sealed under sustained pressure loads.

Key Features

• Rated to 6,000 psi maximum working pressure for demanding high-pressure service
• 1/2-inch MNPTF thread connection for a pressure-tight seal on fuel and hydraulic lines
• Straight hex plug design allows direct port closure without adapters
• 7/8-inch hex size provides secure wrench engagement for proper installation torque
• Compact overall length of 1-7/8 inches suits tight manifold and block installations
• Single-piece construction with no moving parts for long service life

Compatibility

Designed as an OEM-style replacement or service fitting for industrial hydraulic and pneumatic systems requiring a 1/2-inch MNPTF hex plug rated to 6,000 psi.

Installation Notes

Installation should be performed by a qualified pipefitter or fluid power technician familiar with high-pressure system safety procedures. Always depressurize and isolate the system completely before removing or installing any fitting. Apply appropriate thread sealant compatible with the system fluid before threading the plug in by hand, then tighten with a wrench to the fitting manufacturer specifications. Verify system integrity by pressure-testing to the rated operating pressure before returning the system to service.