Ngaphezu kwalokho, izimbobo kanye nomonakalo wendawo we-plastic sheath kungase kubangele umswakama ekungeneni komgogodla wekhebula, izici zikagesi zekhebula ziwohloke.Iphinde yathola ukuthi ukulimala kwejakhethi yekhebula akuyona indawo lapho izici zokudlulisela ziwohloka, okunikeza ukugcinwa kwekhebula nokuxazulula izinkinga eziningi, ngakho-ke enqubweni yokukhiqiza ikhebula, ngokuvamile izindlela ezintathu zokuqinisekisa umswakama nokuvikela amanzi. ikhebula elivuthele phezulu noma eligcwaliswe nge-petroleum jelly lisebenzisa izinto ezimunca kakhulu, ezine-petroleum jelly ekhaya ezinokuvama kancane.Izintambo ezigcwele i-petroleum jelly, ikhebula le-fiber optic yonke igebe, phakathi kwe-seal engangeni manzi idlala indima ye-fiber optical evela endaweni yangaphandle, yandisa impilo yayo, futhi akukho ukugcinwa okungagcina ukuzinza kwesikhathi eside nokuthembeka kokudluliswa kwe-fiber optic.