The new 4" Fermenter Lid screws onto the top of the tank. The lid seals against a silicon red o-ring and the threads at the top of the tank. The silicone ring, as shown, is sold separately.
The new 4" Fermenter Lid screws onto the top of the tank. The lid seals against a silicon red o-ring and the threads at the top of the tank. The silicone ring, as shown, is sold separately.