High silica tepi ndi riboni refractory mankhwala wolukidwa kuchokera mkulu silika galasi ulusi, makamaka ntchito kumanga m'makutu ndi kukulunga pansi kutentha kwambiri kutchinjiriza, kusindikiza, kulimbikitsa, kutchinjiriza ndi zina ntchito.
Ikhoza kugwiritsidwa ntchito stably pa 1000 ℃ kwa nthawi yaitali, ndi yomweyo kutentha kukana kutentha akhoza kufika 1450 ℃.