The GRACO 172393 Washer, Piston Stud is a small, essential component designed for use in GRACO diaphragm pump assemblies. Its main material is not specified in available sources, but it is intended to provide secure fastening and alignment for piston studs within GRACO equipment, ensuring reliable operation and maintenance of pump systems. Key Features: Washer, Piston Stud Designed for use with GRACO diaphragm pump assemblies Essential for secure fastening and alignment Supports reliable operation and maintenance of GRACO pumps Applications:Used in GRACO diaphragm pump assemblies for various industrial and maintenance applications, including lubrication and fluid transfer systems. Installation Notes: Using genuine GRACO parts ensures proper fit, function, and longevity of equipment, reducing downtime and maintenance costs. Ensure the washer is correctly positioned on the piston stud during assembly. Follow GRACO equipment manual instructions for installation and torque specifications. Regularly inspect the washer for wear or damage as part of routine maintenance.