Parker 6-6 Clo-s Male Elbow Orfs X Nptf 3/8-18 6000 Psi

Product Description

The PARKER 6-6 CLO-S is a compression tube male elbow fitting designed to connect a 3/8-inch OD tube to a 3/8-18 NPTF male port using an O-Ring Face Seal (ORFS) interface. Constructed from zinc-plated steel, it provides a rated maximum working pressure of 6000 psi, making it suited for high-pressure hydraulic and fluid-power lines. The elbow configuration allows a 90-degree directional change in the line, which is useful in tight plumbing layouts where straight fittings cannot be routed efficiently. Hydraulic technicians and fluid-power specialists are the primary installers of this type of fitting.

This fitting is intended for hydraulic systems, fluid-power circuits, and other high-pressure tube-and-pipe assemblies where a reliable, leak-resistant ORFS-to-NPTF transition is required. The ORFS end seals against a flat face with an O-ring, minimizing the risk of leakage under pressure cycling, while the NPTF thread end engages tapered pipe threads in a port or manifold. It is commonly found in mobile hydraulic equipment, industrial machinery, and heavy-duty fluid-transfer applications where pressure integrity and vibration resistance are priorities.

Key Features

• O-Ring Face Seal (ORFS) inlet end for positive, leak-resistant sealing under pressure cycling
• NPTF male outlet thread provides a tapered-thread mechanical seal at the port connection
• 6000 psi maximum working pressure rating suitable for high-pressure hydraulic circuits
• Zinc-plated steel construction offers corrosion resistance in typical hydraulic service environments
• 90-degree male elbow geometry enables directional routing in space-constrained installations
• 3/8-inch tube OD and 3/8-18 thread size covers common mid-range hydraulic line dimensions

Compatibility

Designed as an OEM-style replacement or service fitting for high-pressure hydraulic and fluid-power tube assemblies requiring a 3/8-inch OD ORFS compression connection transitioning to a 3/8-18 NPTF male port.

Installation Notes

Installation is typically performed by licensed hydraulic technicians or fluid-power specialists. Depressurize and bleed the hydraulic system fully before removing or installing any fittings. Inspect the ORFS flat sealing face and O-ring for damage before assembly, and ensure the NPTF port threads are clean and free of debris. Do not over-tighten the NPTF connection; follow applicable industry standards for thread engagement on tapered pipe fittings.