Didn’t have the coating so I have to hit up the manufacturer and this was a replacement for the one that came with the volcano I bought that had a defect

Works great, like it should. I don't understand what kind of "metal bonding" happened to the other reviewer's filling chamber, but if you keep your parts well cleaned with isopropyl alcohol to remove the tacky residue buildup, you should have no problems with it. This product also comes with a cleaning brush, 6 replacement screens and a drip pad, fyi.

I absolutely love my Volcano hybrid...but the filling chamber has caused me a lot of anxiety and doubt about how well the device will work. Within the first week of using my volcano hybrid, the filling chamber began to malfunction. Eventually it got to the point where I just couldn't use it anymore, as the metal casing completely bonded together, and it became impossible to separate the two pieces. Fortunately, Vapor.com replaced the part free of charge, and it arrived quickly, so I was able to resume using my volcano very quickly. So far, I haven't experienced the same issue with the replacement filling chamber. But I'm anxious it will start happening again, and I am concerned the design of the chamber itself may be fundamentally flawed. I'll update the review according to how well the replacement fares in the coming weeks. At $62+ it is not really a reassuring prospect to have to replace the filling chamber often. That's almost 10% of the total cost of the volcano hybrid.