The GRACO 556568 is a Buna-N (Nitrile) O-ring with a 90 durometer hardness, designed to provide a reliable seal in GRACO equipment. Its primary function is to prevent leaks and maintain system efficiency by ensuring a tight fit between components.

Key Features:

• O-ring
• ARP-4
• Buna-N (Nitrile) rubber, 90 durometer
• Designed for use in GRACO equipment, specific compatibility should be verified with the equipment manual
• High reliability for sealing applications
• Resistant to oils, fuels, and many chemicals
• Durable construction for long service life

Applications:
Used in GRACO lubrication and fluid handling systems to seal connections and prevent leaks, ensuring efficient operation and reducing maintenance needs.

Installation Notes:

• Using genuine GRACO O-rings ensures proper fit, seal integrity, and equipment reliability, reducing the risk of leaks and downtime.
• Inspect the O-ring for damage before installation
• Ensure mating surfaces are clean and free of debris
• Lubricate the O-ring with compatible lubricant if recommended by the equipment manual
• Do not twist or stretch the O-ring excessively during installation
• Regularly inspect O-rings for wear or damage
• Replace O-rings during routine maintenance or if leaks are detected
• Use only genuine GRACO replacement parts for optimal performance