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The PARKER 10-1/4 F5OG-S is a straight hydraulic pipe adapter designed to connect a 7/8-14 male straight thread O-ring port to a 1/4-inch female NPTF port. Rated to 5,000 psi maximum working pressure, this fitting is built for demanding hydraulic and fluid power systems where leak-free, high-pressure connections are required. Constructed from zinc-plated steel, it resists corrosion in typical industrial environments. The O-ring face seal on the male end provides a positive, vibration-resistant seal. Plumbers, hydraulic system technicians, and industrial maintenance professionals install this adapter as part of larger fluid circuit assemblies.
This adapter suits hydraulic systems in industrial, agricultural, and mobile equipment applications where a straight-thread O-ring boss port must interface with a female NPTF fitting. It is appropriate for use in new installations and as a direct replacement in existing hydraulic manifold and plumbing assemblies requiring this specific thread combination and pressure rating.
Designed as a straight-thread O-ring to female NPTF adapter for hydraulic and fluid power systems using 7/8-14 male O-ring boss ports and 1/4-inch female NPTF connections rated to 5,000 psi.
This adapter is installed by qualified hydraulic technicians or pipefitters. Depressurize and isolate the hydraulic circuit completely before removing or installing any fittings. The male straight thread O-ring end requires a properly seated and undamaged O-ring for a leak-free connection; do not overtighten, as this end seals on the O-ring, not the threads. The female NPTF end should be assembled with appropriate thread sealant per system requirements and relevant fluid power or piping standards.
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