Graco 16U805 Nut Packing

About the Graco 16U805 Nut Packing

The Graco 16U805 Nut Packing is a genuine replacement part used inside various Graco fluid-handling and paint-sprayer pump assemblies. It secures and supports internal packing components, helping maintain proper sealing, reduce leakage and ensure smooth pump operation.

Compatible Machines

• No confirmed machine compatibility list is publicly available for this part number.
• Typically used in Graco piston-pump and fluid-handling systems.
• Check your machine’s parts diagram or service manual to confirm fitment.

Key Functions

• Secures internal packing components in the pump assembly.
• Helps maintain a proper seal around the displacement rod.
• Supports consistent pressure control within the pumping system.
• Reduces risk of leakage and improves long-term pump performance.

Technical Notes

Frequently Asked Questions