Description set of 2 O-Rings #4 in detail parts drawing - second picture inside diameter is about 1/2 inch actual size .549 x .103 Original parts by BouMatic LLC Fits BouMatic Milk Cooler wash tee Fits larger Bulk Tank Washers Dari Kool, Bou-Matic and D.E.C. milk tank washers OEM parts Related spare parts: 1.5 hp drain 4015227 1/2 inch drain hose 5747823 1.5 hp motor with threaded shaft 4016504 updated March 2025
