Works great. Was a little nervous about the lid from some of the reviews. I decided to take the risk figuring I could easily just cut a new lid if it does break. Comes with some o-rings and some back up pieces. Really like the double valve to pull air and hold vacuum. This definitely takes some of the stress off of my vacuum pump. I imagine some of the cracking in previous reviews is due to over tightening of the valve manifold or pulling much more of a vacuum than I am working with. I snugly tightened the bulkhead but let the o-rings serve their purpose. Happy with it!