Good seals are important for the proper use of many types of brewing equipment. The reality is that, through repeated use, these seals can suffer wear and eventually break down. Having an extra set of seals on hand is important and convenient in keeping your brewing operation going at all times. This is a valve seal kit for the 1/2" 3-piece Blichmann ball valve that has the number "316" on the side, and are used on newer NPT valves for Blichmann Fermenters. Keeping a set on hand can help prevent an accident from turning into an emergency.