Parker 8-1/4 F5OG-S Pipe Adapter 6000 Psi Straight Fitting

Product Description

The PARKER 8-1/4 F5OG-S is a straight industrial pipe adapter designed to connect male straight thread O-ring (MSTO) ports to female NPTF threads in high-pressure hydraulic and fluid power systems. The adapter features a 3/4-16 male straight thread with O-ring face seal on one end and a 1/4 inch female NPTF port on the other. Rated to 6,000 psi maximum working pressure, it is constructed from zinc-plated steel for corrosion resistance in demanding service environments. Plumbers, hydraulic technicians, and industrial maintenance professionals install this fitting when transitioning between MSTO and NPTF thread types in pressurized fluid lines.

This adapter is suited for residential and commercial hydraulic systems, fluid power circuits, and industrial plumbing applications where leak-free conversion between straight thread O-ring and tapered pipe thread connections is required. The straight body configuration allows for direct in-line installation without angular offset, making it appropriate for tight plumbing layouts where space is limited. Its compact overall length keeps system footprint small while maintaining full-rated pressure capacity.

Key Features

• 6,000 psi maximum working pressure for demanding hydraulic service
• Male straight thread O-ring x female NPTF connection type for reliable leak-free sealing
• 3/4-16 male thread with 1/4 inch female NPTF port
• Zinc-plated steel construction for corrosion resistance
• Straight fitting shape for direct in-line installation
• 7/8 inch hex size for standard wrench installation

Compatibility

Designed as an OEM-style straight adapter for hydraulic and fluid power systems requiring a male straight thread O-ring to female NPTF conversion at 3/4-16 male and 1/4 inch female thread sizes.

Installation Notes

Installation should be performed by a licensed plumber or qualified hydraulic technician familiar with NPTF and straight thread O-ring fitting procedures. Depressurize and isolate the system completely before removing or installing any fittings. Use a calibrated torque wrench and follow the fitting manufacturer's torque guidelines for the thread size; do not overtighten, as this can damage the O-ring seat or distort the NPTF threads. Verify O-ring condition and seat cleanliness before assembly to ensure a leak-free connection at rated pressure.