GRACO Jam Nut - (SKU: 16U977) but it is engineered to

but it is engineered to regulate and reduce system pressure

Compatible with GRACO equipment requiring 115cc packing cartridges (e

The GRACO D0B777 Complete Fluid Repair Kit is a maintenance kit designed for the Husky Series 1590 diaphragm pumps

Inspect cover and mixer element for wear or damage before installation

GRACO Jam Nut - (SKU: 16U977) but it is engineered toThe GRACO 16U977 is a jam nut, typically made from metal, designed to secure and lock components in place within GRACO pump assemblies. Its primary function is to prevent loosening of threaded connections under vibration or pressure, ensuring reliable operation of GRACO equipment. Key Features: Jam Nut 16U977 Compatible with select GRACO pump assemblies (e. g., 680cc Pump Lower) Secures threaded connections Prevents loosening under vibration or