This is not a cartomizer product. It's a 3 piece ecig. There may be wicking substance but It's not necessarily a stuffed cart. It uses a polyfill ring in regards to the thickness of a little nylon washer. maybe about 2mm thick. The poly washer rests on a small flange https://raymondwflsz.ouyawiki.com/1210934/rumored_buzz_on_jak_si_správně_vybrat_elektronickou_cigaretu