Graco 551188 Fitting, Flush, Grease 1/4-28

Flush Grease Fitting for Reliable Equipment Lubrication

Compatible Machines

• Graco SST 1K Ultra-Lite SS Machine Mount Valve (Model 965766)
• Graco 1K Ultra-Lite Dispense Valve (Model 243666)
• Graco Hand-Held Valve with Pneumatic Trigger (Model 965767)
• Graco Hand-Held Valve with Electric Switch (Model 965768)
• Compatible with Graco equipment that specifies OEM part 551188 in the parts manual.

Product Overview

The Graco 551188 Fitting, Flush, Grease 1/4-28 is a genuine OEM flush grease fitting designed to provide a secure lubrication point for moving components in compatible Graco dispensing equipment. Its 1/4-28 thread allows precise installation while maintaining a low-profile design that helps protect the fitting from accidental damage.

Used together with the appropriate flush grease coupler, this fitting enables efficient delivery of lubricant to internal components during scheduled maintenance. Regular lubrication helps reduce friction, minimize wear, and extend the service life of critical valve assemblies while maintaining dependable equipment performance.

Key Features

• Genuine Graco OEM flush grease fitting.
• 1/4-28 threaded connection for secure installation.
• Low-profile flush design helps prevent fitting damage.
• Provides a dedicated lubrication point for routine maintenance.
• Supports long-term reliability and smoother equipment operation.

Benefits of Routine Lubrication

A properly functioning flush grease fitting allows lubricant to reach internal moving parts without disassembly. Replacing worn or damaged fittings helps maintain consistent lubrication, reduces component wear, and minimizes unexpected equipment downtime.

Frequently Asked Questions