Pentair Purex PacFab Washer, 5/16in SS Washer, 072173
No. 25 Image 072173 Pac Fab Star ST Series Washer Used on Pac Fab (Pentair) Filters and Pumps. Fits Star and Nautilus DE filters (NS/FNS/FRP), and Challenger Pumps. Used on Clamp Band assemblies, over the bolt and against the clamp knob. 072173 can also be found on PacFab Purex parts schematics in our parts department.