Parker 1/8 Ff-s Hex Plug 6000 Psi Mnptf

Product Description

The PARKER 1/8 FF-S is a straight hex plug fitting designed to seal off open pipe ports in hydraulic and fluid system assemblies. Built from zinc-plated steel, it accepts a 1/8 inch male MNPTF (National Pipe Thread Fuel) thread and is rated for a maximum working pressure of 6,000 psi. The overall length is 1-1/16 inches and the hex size measures 7/16 inches for standard wrench engagement. This plug is installed by plumbers, pipefitters, and hydraulic system technicians wherever a threaded port needs to be blocked, capped, or taken out of service temporarily or permanently.

This fitting is suited for use in industrial hydraulic lines, compressed air systems, fuel systems, and other high-pressure fluid circuits requiring a reliable threaded closure. The MNPTF thread form provides a pressure-tight seal on tapered male threads. Typical applications include capping unused ports on manifolds, valves, cylinders, and pump bodies in both commercial and industrial settings.

Key Features

• Rated to 6,000 psi maximum working pressure for demanding hydraulic and fluid service
• Zinc-plated steel construction provides corrosion resistance in industrial environments
• MNPTF tapered male thread creates a pressure-tight port seal without additional fittings
• 1/8 inch thread size fits common small-port manifolds, valves, and cylinders
• 7/16 inch hex drive allows installation with standard open-end or box-end wrenches
• Straight fitting shape allows direct port entry with no offset or angle

Compatibility

Designed as an OEM-style replacement or new-installation hex plug for high-pressure hydraulic and fluid system ports with 1/8 inch MNPTF threaded connections.

Installation Notes

Installation is performed by licensed pipefitters, hydraulic technicians, or qualified plumbers. Depressurize and isolate the system completely before removing or installing any threaded plug. Apply an appropriate thread sealant or PTFE tape rated for the working fluid and pressure before threading in the plug. Tighten with a wrench to achieve a proper seal; do not overtighten, as this can crack the port boss or damage threads.