The GRACO 188493 is a U-cup packing seal made from UHMWPE (Ultra-High Molecular Weight Polyethylene), designed to provide a reliable seal within GRACO spray gun assemblies. Its primary function is to prevent fluid leakage and maintain pressure integrity in the gun’s fluid path.

Key Features:

• U-cup packing/seal
• UHMWPE (Ultra-High Molecular Weight Polyethylene)
• Compatible with select GRACO spray gun models (e.g., G15/G40, PerformAA™ series)
• Durable UHMWPE construction for long service life
• Designed for easy installation with appropriate tools
• Provides reliable sealing in high-pressure fluid applications

Applications:
Used in GRACO spray guns for sealing fluid passages, ensuring leak-free operation during painting, lubrication, or other fluid dispensing tasks.

Installation Notes:

• Using genuine GRACO parts ensures proper fit, performance, and safety, reducing the risk of leaks and equipment failure.
• Use the recommended seal installation tool for proper placement
• Ensure the U-cup lips face the correct direction as indicated in the manual
• Inspect the seal and mating surfaces for damage before installation
• Follow the manufacturer’s maintenance schedule for optimal performance