I was cleaning my airbrush for the first time, and some time during disassembly, a plastic seal called a "packing" went missing. It's supposed to be located between the "central block" and air hose and it very small--I didn't even notice it the first time I took it apart.
Below is a pic of the central block and air hose. That figure-eight depression on the red plastic cover is where the "packing" is supposed to go:
I know it's a stupid question, but is this part essential to the airbrush?
I could have sworn it wasn't even there when I first took the airbrush apart. I searched the entire room, but that plastic part is nowhere to be seen. The airbrush worked fine the first few times, so I was wondering it that packing thing was even needed.
Any advice?