FermZilla Lid O-ring

OD106mm x2.65mm

This thicker Lid O-Ring is suited to the FermZilla Conical and All Rounder Models.
If you have a brown O-Ring, this is a newer material that is softer and easier to fit. 

It is also important to remember not to overtighten the stainless steel handles that may have come with your FermZilla. Over tightening will cause the opening to warp and not seal. The Handles should be able to freely rotate around the neck with little resistance.

*Seal ONLY