One of the most indispensible washers in modern history! Without this washer, there would be leaky kegs on college campuses and at house parties across the country. This is the washer that fits on the bottom of a standard American "D" style coupler. These washers have a tendency to come off during removal after a keg blows. In case this happens to you, be sure to get an extra washer and keep the beer flowing!
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