Parker 8-3/8 F5OF-S Pipe Adapter 6000 Psi Nptf

Product Description

The PARKER 8-3/8 F5OF-S is a straight male pipe adapter designed for high-pressure hydraulic and industrial fluid systems. It transitions from a male straight thread O-ring (STOR) connection to a male NPTF thread, providing a reliable, leak-resistant seal in demanding applications. The adapter carries a maximum working pressure rating of 6000 psi, making it suited for high-pressure lines where fitting integrity is critical. The thread configuration is 3/4-16 UNF-2A on the straight thread O-ring end and 3/8 NPTF on the outlet end. Licensed plumbers, pipefitters, and hydraulic system technicians typically install this fitting during system builds, retrofits, or repair work.

This adapter is commonly used in industrial machinery, mobile hydraulics, and fluid power systems where a straight-through adapter is needed to connect a straight thread O-ring port to an NPTF-threaded component. The straight fitting shape makes it appropriate for installations where inline routing is required and space constraints do not call for an elbow or tee configuration. It is packaged individually and intended for professional use in hydraulic circuit assembly and maintenance.

Key Features

• Maximum working pressure of 6000 psi for high-pressure hydraulic service
• Male straight thread O-ring (3/4-16 UNF-2A) to male NPTF (3/8) configuration
• Straight fitting shape for inline installations
• 7/8-inch hex size for standard wrench installation
• Overall length of 1-3/8 inches for compact inline fitment
• Thread standard UN/UNF-2A ensures dimensional consistency with SAE straight thread ports

Compatibility

Designed as a direct-fit adapter for industrial fluid power and hydraulic systems requiring a male straight thread O-ring to male NPTF transition. Compatible with systems using UN/UNF-2A straight thread ports rated to 6000 psi.

Installation Notes

Installation should be performed by a qualified pipefitter, hydraulic technician, or plumber familiar with high-pressure fluid system assembly. Always depressurize and isolate the circuit completely before removing or installing any fitting. The O-ring on the straight thread end must be inspected and properly seated before torquing; do not reuse damaged or deformed O-rings. Follow the system manufacturer and applicable industry standards for thread engagement and assembly procedures.