The GRACO 120286 is a U-cup packing, typically made from fluoroelastomer or similar high-performance elastomer, designed to provide a reliable seal in displacement pumps. It is intended for use within GRACO Check-Mate 800 Displacement Pump assemblies, specifically for hot-melt applications, ensuring fluid containment and preventing leaks under high pressure and temperature conditions.

Key Features:

• U-cup packing
• Fluoroelastomer or similar elastomer (based on typical GRACO packing materials for this application)
• Compatible with pumps rated up to 5850 psi (40 MPa, 403 bar) maximum fluid working pressure
• Check-Mate 800 Displacement Pump series
• Designed for high-pressure and high-temperature environments
• Provides reliable sealing in demanding industrial applications
• Ease of maintenance and replacement as part of routine pump service

Applications:
Used in hot-melt adhesive and sealant dispensing systems, particularly in industrial and manufacturing environments where reliable sealing under high pressure and temperature is required.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and longevity of the equipment. Non-genuine parts may compromise seal integrity and equipment reliability.
• Ensure the packing is installed with the lips of the U-cup facing down for proper sealing
• Lubricate the packing and related components with high-temperature grease as specified in the manual
• Follow torque specifications for packing housing and related fasteners (e.g., 305 ± 14 N.m for packing housing)
• Inspect and replace packing during routine maintenance to prevent leaks and maintain pump efficiency