This is not a cartomizer model. It's a 3 piece ecig. There's wicking content but It is far from a stuffed cart. It uses a polyfill ring about the thickness of a small nylon washer. possibly about 2mm thick. The poly washer rests on a little flange on the center https://vyhody-elektronicke-cigar65319.wikibyby.com/1203995/the_electronic_cigarette_diaries