Tun da 1958, jimlar tallace-tallace na Thunder, walƙiya iri mai zafin gilashin insulator ya zarce guda miliyan 100, wanda ya kai rabin ƙasar da kashi ɗaya na shida na duniya.
Gilashin Insulator yana kunshe da hular ƙarfe, sassa masu taurin gilashi da fil ɗin ƙarfe, waɗanda aka haɗa su da mannen siminti.Kafin haɗuwa, an ba da saman fil ɗin karfe tare da gasket mai laushi, rami na ciki na murfin ƙarfe da fil ɗin ya ƙare a wurin hulɗa tare da mannen siminti an rufe shi da tar.Ana amfani da gasket da kwalta don ƙulla idan sun lalace lokacin da insulator ke fuskantar faɗaɗawar zafi da raguwa.Ana amfani da sassan gilashin da aka tauye don rufewa.
Gilashin insulators suna da halaye na ƙananan ƙananan, nauyi mai sauƙi, ƙaddamar da ƙimar sifili, da sauƙin ganewa;babban ƙarfin injiniya;kyakkyawan juriya na baka;kyakkyawan aikin tsaftace kai kuma ba sauƙin shekaru ba.Bugu da ƙari, kayan fesa yana da fa'idodi na ƙarfi na hydrophobicity, juriya na dogon lokaci ga gurɓatacce, ƙarancin ɗigon ruwa a saman, da kuma ba da kulawa yayin aiki;ana amfani da shi sosai a wurare daban-daban a gida da waje.
Ana raba insulators na dakatarwar faifai zuwa Nau'in Nau'in Nau'in, Nau'in Kariya, Nau'in DC, Nau'in Aerodynamic, Nau'in Haƙarƙari da Nau'in Waya Ground.
