The GRACO 620836 Washer, Piston, Packing is a genuine spare part designed for use in GRACO airless spray systems and pumps. It functions as a sealing component within the piston assembly, helping to maintain pressure and prevent leaks during operation. The material is not explicitly specified in available sources, but typical piston packings in such applications are made from durable polymers or composite materials for wear resistance and longevity.

Key Features:

• Washer, Piston, Packing
• Compatible with GRACO airless spray systems and pumps, including models referenced in GRACO President 10:1 Ratio Air Spray System manuals
• Designed for reliable sealing and pressure maintenance
• Supports smooth piston movement and reduces wear
• Ease of maintenance as a replaceable part

Applications:
Used in GRACO airless spray systems and pumps for sealing piston assemblies, ensuring efficient and leak-free operation in industrial and commercial painting, lubrication, and maintenance applications.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, longevity, and safety of the equipment. Non-genuine parts may compromise system integrity and void warranties.
• Always refer to the specific equipment manual for installation instructions
• Ensure the system is depressurized before replacing the piston packing
• Inspect the piston and cylinder for wear or damage before installing new packing
• Use appropriate tools and follow safety procedures to avoid injury
• Regularly inspect piston packings for wear and replace as needed
• Keep the piston and cylinder clean to prevent premature wear
• Use only recommended lubricants if specified in the manual