The GRACO 551191 is a U-cup packing seal designed for use in GRACO fluid handling equipment. It is typically made from urethane (URT) material and serves as a critical sealing component to prevent leaks and ensure reliable operation within pumps and valves.

Key Features:

• Packing, Seal U-Cup
• URT 1/4, 1/2, 1/
• Urethane (URT)
• Compatible with GRACO equipment requiring U-cup seals of specified sizes
• Durable urethane construction for long service life
• Reliable sealing performance in dynamic applications
• Ease of replacement and maintenance

Applications:
Used in GRACO pumps and valves for sealing pistons and shafts, preventing fluid leakage and maintaining system integrity in industrial fluid handling applications.

Installation Notes:

• Using genuine GRACO parts ensures proper fit, performance, and longevity of equipment.
• Ensure equipment is depressurized and isolated before installation
• Clean mating surfaces thoroughly before fitting the seal
• Lubricate the U-cup seal with compatible fluid to ease installation and prevent damage
• Follow manufacturer’s torque and alignment specifications
• Regularly inspect seals for wear or damage
• Replace seals at recommended intervals or when leaks are detected
• Use only compatible fluids and solvents as specified in the equipment manual