Graco 256557 Nut, Packing, 4.5/6.0 Cm

Compatible Machines & Equipment

The Graco 256557 Nut, Packing, 4.5/6.0 cm is used with Graco 60cc and 100cc displacement pump assemblies commonly found in the following equipment and systems:

• Graco Check-Mate 60cc Pump Systems
• Graco Check-Mate 100cc Pump Systems
• Heavy-Duty Material Supply Systems using 60cc pumps
• Heavy-Duty Material Supply Systems using 100cc pumps
• Industrial Adhesive Transfer Systems equipped with 60cc displacement pumps
• Industrial Adhesive Transfer Systems equipped with 100cc displacement pumps
• Sealant and Extrusion Systems utilizing 60cc pump lowers
• Sealant and Extrusion Systems utilizing 100cc pump lowers
• Industrial Finishing Equipment using compatible 60cc pump assemblies
• Industrial Finishing Equipment using compatible 100cc pump assemblies

Product Overview

The Graco 256557 Nut, Packing, 4.5/6.0 cm is a genuine replacement component designed for use in select Graco displacement pumps. This packing nut helps secure and compress the internal packing assembly, maintaining an effective seal around the pump rod while helping reduce fluid leakage and wear.

Manufactured for demanding industrial applications, this component plays an important role in maintaining pump efficiency, extending service life, and supporting consistent material transfer performance.

Key Features

Benefits of Replacing a Worn Packing Nut

• Helps maintain proper sealing performance within the pump.
• Reduces the likelihood of fluid leakage.
• Supports consistent pump operation and pressure control.
• Helps extend the service life of internal packing components.
• Maintains reliable performance in demanding industrial environments.

Applications

This packing nut is commonly used in industrial pumping systems that handle adhesives, sealants, coatings, and other high-viscosity materials. It is designed to support proper packing adjustment and sealing performance within compatible displacement pump assemblies.

Frequently Asked Questions