Great vacuum chamber for the price. I use it to degas plastisol for making soft plastic lures. Chamber easily fits two 2 cup pyrex measuring cups and holds a seal for hours. Gauge and valves are better than I expected. Hose is plenty strong and flexible for my needs. I use a standard a/c vacuum pump and I'm able to draw -30inHg vacuum. If I ever break it, this is the one i would by again to replace it. It comes with silicon washers for sealing the manifold, but i did add teflon tape for piece of mind. A great buy. I didn't need to purchase any additional adapter to get this to fit my H. Freight pump.