^ Lol I lost the same part for my aerotank clearomnizer and had the same problem last week. Had to buy a new 5 pack just so I can fix it.
I cracked my Aerotank glass today

is there a place locally or online I can get a replacement for cheap? best I found was $20 for 2 with shipping but it seems like most places charge $5 if I dont have to pay for shipping lol
and is the Aerotank glass the exact same as the protank 2/3? some websites claim they are and some say they are diffrent