Midland Industries FF1MSAE Flat Face Sae O-ring Plug 1 in

Product Description

The MIDLAND INDUSTRIES FF1MSAE is a flat face SAE O-ring plug designed for hydraulic systems requiring a secure, leak-resistant port closure. This plug features a 1-inch body size with a female O-ring boss connection and is manufactured from steel with a zinc-plated finish for corrosion resistance. It is rated for a maximum operating pressure of 3000 psi and handles temperatures from -65 to 250 degrees F. Hydraulic technicians and maintenance professionals install this plug to cap open ports on hydraulic circuits, preventing contamination and pressure loss during service, repair, or equipment storage.

This plug is suited for use in industrial and mobile hydraulic applications where SAE O-ring boss thread port closures are required. Typical install scenarios include capping unused ports on hydraulic manifolds, cylinders, pumps, and valves. The flat face design aligns with flush face ISO standards, making it appropriate for systems where minimizing fluid loss during connection and disconnection is a priority. It is commonly used in both stationary industrial equipment and mobile machinery hydraulic circuits.

Key Features

• Flat face plug design compatible with flush face ISO hydraulic port standards
• Female O-ring boss connection on a 1-inch body provides a reliable, leak-resistant seal
• Rated to 3000 psi maximum operating pressure for demanding hydraulic service
• Operating temperature range of -65 to 250 degrees F suits a wide range of environments
• Steel construction with zinc-plated finish resists corrosion in industrial and outdoor settings

Compatibility

Designed as an OEM-style replacement or service plug for hydraulic systems using 1-inch SAE O-ring boss thread ports conforming to flush face ISO standards.

Installation Notes

Installation should be performed by a qualified hydraulic technician. Depressurize and isolate the hydraulic circuit fully before removing or installing any port plugs. Confirm the O-ring is properly seated and lubricated before threading the plug into the port. Torque to the hydraulic system manufacturer's specification for the port size and always inspect for leaks after returning the system to pressure.