Ii-flanges zentamo ze-weld ziyinxalenye ebalulekileyo kummandla wobunjineli bemichiza, ngakumbi ngaphakathi kweenkqubo zombhobho. Ezi flanges ziyilelwe ngokukodwa ukuba zisetyelwe kumbhobho, ziqinisekisa unxibelelwano olomeleleyo noluthembekileyo. Ngokungafaniyo neeflange ezityibilikayo, ezinokuthi zingakhuselekanga, Ii-flange zentamo ezikhohlisiweyo zibonelela ngotshintsho olungenamthungo phakathi kombhobho kunye ne-flange, ukunciphisa kakhulu i-riss