A good seal is a terrible thing to lose, especially on a fermenting vessel; it can mean the difference between a flawless craft beer and an infected mess. The Fermenator Lid Seal creates that perfect seal on Blichmann's Fermenators. These replacement seals are available for the 7, 14.5 and 27 or 42 gallon models (the 27 and 42 gallon models use the same size lid seal), and are good to have on hand in case of an accident. Be prepared with an extra Fermenator Lid Seal!