Babban ma'aunin ƙarfin ƙarfi na albarkatun siliki shine silica.
Ƙungiyoyin intermolecular na polydimethylsilane kaɗan ne, don haka ƙarfin injin ɗin giciye na elastomer - wanda aka haɗa daga siliki mai ɗanɗanon roba mai tsafta yana da ƙasa sosai kuma ba shi da ƙima mai amfani. Idan aka kwatanta da sauran roba roba, ƙarfafa filaye a cikin siliki sun fi mahimmanci don inganta kayan aikin injiniya. Lokacin da aka ƙara filaye masu ƙarfafawa, ana iya ƙara ƙarfin jujjuyawar roba daga 0.35MPa zuwa 14MPa, ƙarfin ƙarfafawa ya kai sau 40.