Igice cy'urutonde:

--- PTFE (Polytetrafluoroethylene) umuzingo wa kaseti, uzwi ku izina rya Teflon, afite uruhare runini mubice byo gufunga ibikoresho nibigize, cyane cyane mubikorwa byinganda. Iyi kaseti itandukanye ikoreshwa cyane cyane mugukora kashe ikomeye ku ngingo z'urutonde, gukumira kumeneka muri sisitemu ya sisitemu, Amazi, hamwe nizindi porogaramu yohereza amazi. Imwe mumiterere yimiterere ya PTF