Parker 3/8 X 1/8 Ff-s Hex Plug 6000 Psi Mnptf

Product Description

The PARKER 3/8 X 1/8 FF-S is a straight hex plug fitting designed for high-pressure industrial pipe applications. It features a male MNPTF (Dryseal) thread connection with a 3/8 inch by 1/8 inch thread size, and is rated for a maximum working pressure of 6,000 psi. The straight configuration and hex drive design allow for reliable torque application during installation. This type of fitting is typically installed by pipefitters, plumbers, and industrial maintenance technicians working on hydraulic, pneumatic, or fluid transfer systems that demand leak-free sealing under sustained pressure.

This hex plug is suited for use in industrial pipe systems where a male threaded port must be sealed off. Common applications include hydraulic manifolds, pneumatic distribution blocks, and high-pressure fluid systems in commercial and industrial settings. The MNPTF thread form provides a pressure-tight seal through thread interference, making it appropriate for systems that cannot rely solely on thread sealants or tape.

Key Features

• 6,000 psi maximum working pressure for demanding high-pressure service
• MNPTF (Dryseal) straight thread connection for pressure-tight sealing
• 3/8 inch by 1/8 inch male thread size for reduced-port plugging applications
• 3/4 inch hex size for standard wrench engagement
• Overall length of 1-7/16 inches for compact installation clearance
• Straight fitting shape for direct port termination

Compatibility

Designed as an OEM-style replacement or direct-install hex plug for industrial pipe systems using MNPTF straight thread ports rated to 6,000 psi.

Installation Notes

Installation should be performed by a qualified pipefitter or hydraulic technician familiar with MNPTF dryseal thread standards. De-pressurize and isolate the system completely before removing or installing any plugs or fittings. Use an appropriately sized open-end or box wrench on the 3/4 inch hex; do not use pliers or pipe wrenches on the hex body. Follow applicable system pressure ratings and relevant industry codes when returning the system to service.