Parker 1 1/4 X 1 Ff-s Hex Plug 3000 Psi Mnptf

Product Description

The PARKER 1 1/4 X 1 FF-S is a straight hex plug designed for industrial pipe systems requiring a secure, leak-free male threaded connection. It accepts a 1-1/4 x 1 inch MNPTF (Male National Pipe Thread Fuel) connection and carries a maximum working pressure rating of 3000 psi. The hex drive design allows for standard wrench installation, making it a practical solution for high-pressure hydraulic, pneumatic, and fluid transfer lines. Plumbers, pipefitters, and hydraulic system technicians install this fitting when capping or blocking off a port in a pressurized line or manifold assembly.

This hex plug is suited for industrial and commercial piping applications where a reliable MNPTF threaded port closure is required. Typical installation scenarios include hydraulic manifolds, fluid power systems, and high-pressure plumbing assemblies. The straight fitting shape and standardized thread form make it compatible with a wide range of pipe system configurations in both shop and field environments. It conforms to SAE 140137 standards, which is relevant for hydraulic and fluid power component applications.

Key Features

• 3000 psi maximum working pressure rating for high-pressure system applications
• MNPTF connection type provides a tapered male thread for a secure, fuel-rated seal
• 1-3/4 inch hex size accommodates standard open-end or combination wrenches
• Straight fitting shape for direct port closure without offset or angle
• Meets SAE 140137 standards for hydraulic and fluid power fittings
• Compact overall length of 2-7/16 inches for installations with limited clearance

Compatibility

Designed as an OEM-style replacement or service fitting for industrial pipe and hydraulic systems requiring a 1-1/4 x 1 inch MNPTF hex plug rated to 3000 psi.

Installation Notes

This fitting is installed by licensed pipefitters or hydraulic technicians. Always depressurize and isolate the system completely before removing or installing any threaded plug. Apply an appropriate thread sealant or PTFE tape rated for the fluid type and pressure range in use. Do not overtighten, as damage to the tapered thread can compromise the pressure seal.