The Black Gasket is designed to seal the threaded lid on all of the fermenters using the 4" Threaded Lid. This gasket will cover more surface area than its predecessor, the Red O-Ring. Specially designed for Minibrew® so it will not fall out as you put it in place to screw into the threads of the fermenter.
The Black Gasket is standard equipment on all fermenter orders utilizing the 4" Threaded Lid.
If your model utilizes the Red O-Ring, your lid will also be able to receive the Black Gasket. The Red O-Ring will continue to work, we just felt the more surface area that could be covered, the better the seal.
The second picture show the top of the f6.5xe gasket with the 1/2 inch Stainless Steel Weldless EZ Seal installed. This additional EZ Seal will allow you to attach various fittings which would make transfers into the fermenter much easier. You can use quick-connects and run your wort through tubing, in which case it would not see as much oxygen in the transfer. Lessens chances for infection and spoiling.