A washer helps space, support, or distribute load within a compatible cleaner assembly, and this Maytronics Dolphin version features a 13 mm inside diameter using the 9980025 reference. Small hardware components like washers can be easy to overlook, but they often play an important role in maintaining correct fit and alignment.This washer has practical value because robotic cleaner assemblies depend on properly sized hardware to keep moving and structural parts positioned correctly. A correctly matched washer helps support cleaner reassembly accuracy and contributes to a more complete repair outcome.This type of part is especially useful during teardown and rebuild work when original hardware is lost, damaged, or no longer suitable for reuse. That helps keep the maintenance work more precise and more dependable.Installed in the proper application, this washer helps support correct assembly fit and cleaner overall service accuracy. 13 mm inside diameter washer for compatible Maytronics Dolphin applications Helps support spacing, load distribution, or component alignment Useful during rebuild and reassembly work Supports more complete hardware replacement Improves repair precision and fit confidence