The GRACO 556666 is a brass compression fitting designed for use with 5/16 inch (7.9 mm) tubing. It is intended for connecting and securing tubing in pneumatic grease jockey systems, primarily for on-road vehicle applications. The fitting is compatible with oil and grease, ensuring reliable performance in lubrication systems.

Key Features:

• Nut Fitting
• 5/16 inch (7.9 mm)
• Brass
• Oil, Grease
• Compression style for secure tube connection
• Durable brass construction for corrosion resistance
• Reliable performance in lubrication systems

Applications:
On-road vehicle lubrication systems, pneumatic grease jockey systems

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance in lubrication systems.
• Ensure tubing is cut cleanly and squarely for best fit
• Hand-tighten nut and sleeve before final tightening with a wrench
• Inspect for leaks after installation
• Regularly inspect fittings for wear or damage
• Replace fittings if leaks or damage are detected
• Use only compatible fluids (oil, grease) as specified