The GRACO 258823 Kit, U-Cup Repair 120 is a replacement repair kit designed for use in GRACO Z-Series chemical pumps. It contains essential components such as U-cups and related seals, typically made from durable elastomeric materials, to restore sealing and prevent leaks in high-wear areas of the pump assembly. This kit is intended for maintenance and repair of GRACO equipment, ensuring reliable operation and extended service life.

Key Features:

• Repair kit (U-cup and seals)
• 120 (refers to pump size, likely 120cc displacement)
• GRACO Z-Series chemical pumps (specifically for 120cc models, but may fit other sizes as per repair kit documentation)
• Designed for high-wear areas
• Restores sealing and prevents leaks
• Supports reliable pump operation
• Ease of maintenance with pre-assembled kit

Applications:
Used for maintenance and repair of GRACO Z-Series chemical pumps, particularly in industrial, agricultural, and mining environments where reliable fluid handling is critical.

Installation Notes:

• Using genuine GRACO repair kits ensures proper fit, performance, and longevity of the equipment, reducing downtime and maintenance costs.
• Lubricate seals, O-rings, and moving parts with grease before installation
• Apply anti-seize lubricant to threads as recommended
• Ensure U-cups are oriented correctly (springs face displacement rod or throat cartridge as per manual)
• Follow torque specifications for assembly (for 120cc, torque to 160-ft-lbs (216 N•m) as per general Z-Series instructions; always confirm with specific pump manual)
• Use star pattern for tightening tie bolts if applicable