I'm 99% sure the grommets are identical on the Airs and Kanger BCC. Somewhere on my travels I saw a link to a source for them, called a "Universal Somethin' or Other". They're the same on a lot of coils. It may have been on the Protank Micro Coil thread. You could ask over there. Folks been rebuilding BCC's a lot longer than the Airs have been around.
I would but I'm sorta at work.
I would but I'm sorta at work.