Variable volume fermenters, can be used for wine fermenting and more. Often made of stainless steel, uses a stainless lid and inflatable gasket to make an airtight seal at whatever your necessary volume is. Almost all items on this page are special orders, and typically have a lead time of 10 to 4 days. If you don't see an item you need listed here, let us know! We can find and get a hold of many variable volume accessories and specific tanks.