PTFE waa polytetrafluoroethylene,sidoo kale loo yaqaan Teflon (Teflon), waa alaabta shaandhada bacda ee ugu sareysanoocyo ka mid ah.Bacda PTFE ee iska caabinta xaaladaha daxalka, adeegganolosha shuruudaha walxaha shaandhada ee munaasabadaha.