FKM O-ring imayimira Fluoroelastomer O-ring yomwe ndi mtundu wa rabara yopangidwa kuchokera ku fluorine, carbon, ndi haidrojeni.Imadziwika chifukwa cha kukana kutentha kwambiri, mankhwala owopsa, ndi mafuta omwe amapangitsa kukhala chisankho chodziwika bwino pakusindikiza ntchito m'mafakitale monga magalimoto, mlengalenga, ndi kukonza mankhwala.FKM O-mphete imadziwikanso chifukwa cha kulimba, kukhazikika, komanso kukana kukakamiza.