The GRACO 15F748 is a U-cup piston seal designed for use in GRACO fluid handling equipment. It is typically made from durable elastomeric materials suitable for sealing pistons in high-pressure and high-cycle applications. Its primary function is to prevent fluid leakage and maintain pressure integrity within the piston assembly. Key Features: U-Cup Seal E10 Designed for reliable sealing in piston assemblies Suitable for high-cycle and high-pressure environments Compact and lightweight for easy installation and maintenance Applications:Used in GRACO fluid handling and spray equipment where piston sealing is required, such as in paint sprayers, lubrication systems, and other industrial fluid delivery systems. Installation Notes: Using genuine GRACO parts ensures optimal performance, longevity, and compatibility with GRACO equipment. Ensure the piston and seal surfaces are clean and free of debris before installation Lubricate the seal as recommended by the equipment manual Inspect the seal for damage or wear before installation Follow manufacturer guidelines for installation torque and alignment Regularly inspect seals for wear or damage Replace seals at recommended intervals or when leaks are detected Use only compatible lubricants and cleaning agents