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" or "304" on the side, and includes all the seals needed for these ball valves that are ubiquitous in Blichmann equipment. Keeping a set on hand can help prevent an accident from turning into an emergency.