This is simply not a cartomizer design. It is just a three piece ecig. There's wicking materials but It's not necessarily a stuffed cart. It uses a polyfill ring regarding the thickness of a small nylon washer. it's possible about 2mm thick. The poly washer rests on a little flange https://koupitelektronickoucigare10875.wikisona.com/1220896/examine_this_report_on_elektronické_cigarety