Parker 6608-16-16 Female O-ring Boss Hydraulic Coupler

Product Description

The PARKER 6608-16-16 is a straight, threaded female O-ring boss (ORB) hydraulic coupler designed for high-pressure fluid line connections in mobile and industrial hydraulic systems. Built from steel with a 1-inch hose size and 1-5/16-12 thread, it carries a maximum working pressure of 4,000 psi and supports flow rates up to 50 GPM. The coupler measures 4.11 inches in overall length and weighs 1.75 pounds. It is intended for installation by hydraulic system technicians and mobile equipment mechanics who require a reliable, leak-resistant ORB connection in demanding service environments.

This coupler is suited for mobile hydraulic applications including snow plows and truck-trailer hydraulic connections. The female ORB design seats against a boss port fitting, providing a metal-to-metal face seal that minimizes leak paths under pressure cycling. Its straight configuration makes it a direct in-line fitting choice where hose routing does not require angled transitions. It conforms to ISO 7241-1 Series A standards and is part of the Parker 6600 Series, making it compatible with standard SAE hydraulic port configurations found on mobile equipment and commercial vehicle hydraulic circuits.

Key Features

• Female O-ring boss (ORB) threaded connection with 1-5/16-12 thread size for secure, leak-resistant sealing
• 4,000 psi maximum working pressure suitable for high-demand mobile hydraulic circuits
• Maximum flow rate of 50 GPM supports high-volume hydraulic systems
• Steel construction provides durability in mobile and outdoor service environments
• Straight body shape simplifies in-line hose routing
• Conforms to ISO 7241-1 Series A and SAE standards

Compatibility

Designed for use with mobile hydraulic applications including snow plows and truck-trailer connections. Conforms to ISO 7241-1 Series A and SAE shaft standards, making it compatible with standard 1-inch ORB boss ports on mobile equipment hydraulic circuits.

Installation Notes

Installation should be performed by a qualified hydraulic technician. Relieve all system pressure and depressurize the hydraulic circuit completely before removing or installing any fittings. Inspect the O-ring sealing surface on the boss port for damage before assembly, and ensure the O-ring is properly seated to prevent leaks. Torque to the fitting manufacturer's recommended specification for the thread size; do not over-tighten, as this can damage the O-ring or boss port seat.