This is simply not a cartomizer product. It's a three piece ecig. There is certainly wicking materials but It isn't a stuffed cart. It employs a polyfill ring with regard to the thickness of a little nylon washer. probably about 2mm thick. The poly washer rests on a little flange https://manuelcioub.westexwiki.com/1194026/examine_this_report_on_electronic_cigarette