Graco 164459 Shaft Seal

Detailed Overview: Graco 164459 Seal, Shaft (OEM)

The Graco 164459 Seal, Shaft is a precision sealing element used inside pump/lower assemblies to prevent fluid leakage along the drive shaft and maintain spray pressure and reliability.

Compatible Machines

This seal is used in pump/lower assemblies that explicitly list 164459 in their parts manuals. Models commonly associated with these pump families include (verify by serial/model & pump type):

• Selected Ultra Max II 695 & Ultra Max II 795 (check your pump assembly bill of materials)
• Selected GMAX II 3900 & GMAX II 5900 (confirm by pump version)
• Other Graco contractor/industrial sprayers using lowers that specify 164459

Key Details

• Function: Seals around the rotating shaft to minimize leakage and maintain system pressure.
• Build: OEM-grade materials for durability with paints, coatings, and compatible solvents.
• When to replace: During lower rebuilds or if you observe leakage, pressure loss, or shaft play.

Specifications

Maintenance Tips

• Inspect the shaft and bushing for wear before installing the new shaft seal.
• Use clean lubricant compatible with the seal material and fluid being sprayed.
• Follow correct orientation and seating depth to avoid premature failure.

Frequently Asked Questions