Welcome to the Bungs & Rubber Stopper Section. Here you will find bungs made out of 100% Food Grade Silicone. Made right here in the USA and in fact in California. Dont be fooled by immitators selling cheaper bungs. These bungs tend to be from China and are not composed entirely of food grade silicone. For your wine's sake, we know you should with a sure thing, especially a sure thing that is in constant contact with your wine.