This is not a cartomizer model. It's a 3 piece ecig. There exists wicking product but it is not a stuffed cart. It utilizes a polyfill ring in regards to the thickness of a little nylon washer. probably about 2mm thick. The poly washer rests on a little flange on https://elektronick-cigarety-pro89788.birderswiki.com/1162281/electronic_cigarette_for_dummies