The GRACO 15D125 is a U-cup seal designed for use with a .375 inch shaft diameter. It is typically constructed from durable elastomeric materials such as Buna-N or similar compounds, and is intended to provide a reliable seal within GRACO spray equipment, preventing leaks and ensuring smooth operation of the shaft mechanism.

Key Features:

• U-cup seal
• 15D125, .375 inch shaft diameter
• Elastomeric (commonly Buna-N or similar)
• GRACO spray equipment with .375 inch shaft diameter
• Designed for easy replacement and maintenance
• Provides reliable sealing for moving shafts
• Fragile during installation—requires careful handling

Applications:
Used in GRACO spray guns and texture sprayers to seal the shaft and prevent fluid or air leakage during operation.

Installation Notes:

• Using genuine GRACO parts ensures proper fit, performance, and longevity of the equipment.
• Handle U-cup seals carefully as they are fragile and can be damaged if pounded or forced during installation.
• Remove old seal using a hook-shaped tool.
• Install new seal using a small diameter object (1/4 inch or smaller) to gently push it into place, ensuring it is seated against the sleeve bearing.
• Replace related components (air valve needle, seal, spring, O-ring) if necessary during maintenance.