Parker 12-8 F5OLO-S Straight Thread Connector 3/4-16

Product Description

The PARKER 12-8 F5OLO-S is a compression tube straight thread connector designed for high-pressure hydraulic and fluid power plumbing applications. It features an O-Ring Face Seal (ORFS) connection on one end and an SAE Straight Thread O-Ring Boss (SAE-ORB) connection on the other, allowing technicians to join tubing to port fittings with a leak-resistant, face-seal interface. Constructed from steel, this connector is rated to a maximum working pressure of 6000 psi. The 3/4-16 UNF thread size accommodates 3/4-inch outside diameter tubing. It is a single-piece fitting suited for hydraulic lines in mobile equipment, industrial machinery, and fluid power systems.

This connector is used in hydraulic plumbing circuits where a tube run must terminate at a straight-thread port. Typical installations include hydraulic power units, mobile hydraulic systems on construction or agricultural equipment, and industrial fluid power lines. The ORFS end provides a metal-to-metal face seal backed by an O-ring, significantly reducing the risk of leaks at tube connections under high-cycle or high-vibration conditions. Licensed hydraulic technicians and fluid power specialists are the primary installers.

Key Features

• ORFS x SAE-ORB end connections provide a reliable, leak-resistant interface for high-pressure hydraulic circuits
• Rated to 6000 psi maximum working pressure for demanding hydraulic applications
• 3/4-16 UNF thread size fits 3/4-inch outside diameter tubing
• Steel construction for durability in hydraulic and fluid power environments
• Straight thread connector geometry for direct port-to-tube installation

Compatibility

Designed as an OEM-style replacement or new-installation fitting for hydraulic systems using 3/4-inch OD tubing with ORFS tube ends connecting to SAE-ORB straight-thread ports.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power specialist. Depressurize and isolate the hydraulic circuit completely before removing or installing any fittings. Inspect the O-ring and sealing face for damage before assembly, and lubricate the O-ring with system-compatible fluid prior to tightening. Follow the fitting manufacturer torque guidelines for the specific tube OD and thread size to avoid over-tightening or under-sealing.