The only thing to watch out for is the tiny vent hole on it. Other than that I couldn't find a chemical in my shop that would hurt the diaphram inside.
Around here they're pushing the zip system. It's designed for use in a remote system but they're pushing it for use in regular construction. Recipe for disaster if you ask me.
Picked up this metal cabinet. It was in poor condition, hammered out the bigger dents. Then cleaned and painted it. Had to make a new hinge pin as one was missing. Still have one more shelf to clean and paint.