The GRACO 4-411-02 is a piston assembly with an integrated O-ring, designed for use in GRACO E & ER series fluid handling guns. The part is engineered to provide reliable sealing and smooth piston movement, ensuring optimal performance and durability in high-pressure fluid transfer applications. Material specifics are not detailed in available sources, but GRACO pistons are typically constructed from robust metals with high-quality elastomeric seals.

Key Features:

• Piston Assembly with O-Ring
• Metal piston with elastomeric O-ring
• GRACO E & ER series fluid handling guns
• Reliable sealing for high-pressure applications
• Engineered for smooth piston movement
• Designed for durability and long service life
• Ease of maintenance with replaceable O-ring

Applications:
Used in GRACO E & ER series fluid handling guns for precise and reliable fluid transfer in industrial lubrication and maintenance systems.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance of your equipment. Non-genuine parts may compromise safety and efficiency.
• Ensure the equipment is depressurized and isolated before installation.
• Inspect the O-ring for damage and replace if necessary.
• Apply appropriate lubricant to the O-ring and piston as recommended by GRACO.
• Follow torque specifications for assembly to prevent leaks and ensure proper function.
• Refer to the equipment manual for detailed installation procedures.
• Regularly inspect the piston and O-ring for wear or damage.
• Replace the O-ring as part of routine maintenance to prevent leaks.
• Keep the piston assembly clean and free from debris.
• Use only GRACO-approved lubricants and replacement parts.