Ishubhu ye-silicone yerabha ye-fiberglass iwuhlobo lweshubhu olulukwe nge-fiberglass engeyona eye-alkali futhi ehuqwe ngohlobo olukhethekile lwe-silicone resin nakuba izinga lokushisa liphezulu. Lolu hlobo Uhlangothi lwangaphakathi luyi-fiberglass kanti ingaphandle iyirabha eboshwe nge-silicone. Ibanga lokumelana nezinga lokushisa lingama-200°C, Isetshenziselwa kakhulu ukuvikela ukufakwa kwe-voltage ephezulu kwezinto zikagesi ezikhiqiza ukushisa okuphezulu, njengokuvikelwa kwe-insulating, imishini kagesi, into yasendlini, imishini kagesi, njll.