Ama-flanges-on ayingxenye ebalulekile emkhakheni wepayipi lamakhemikhali nokufakwa. Yaziwa ngokulula kwayo kokufakwa nokusebenza okuhlukahlukene, lezi zindlu zinikeza isixazululo esithembekile sokuxhuma amapayipi ezimbonini ezahlukahlukene, ikakhulukazi ngaphakathi kokucutshungulwa kwamakhemikhali nokuthuthwa. Idizayini ye-flange e-slip-on ivumela ukuthi ishelelwe ngaphesheya kwepayipi, okwenza ukuqondanisa kuqonde ngqo futhi kubuyisele