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.