ʻO ka lima hoʻopili silicate alumini i kekahi manawa i kapa ʻia ʻo asbestos plug a me ka pāpale insulation no ka puka o ka umu hoʻoheheʻe alumini-keleawe-zinc. Hana nui ʻia ia me nā olonā keramika silicate alumini kiʻekiʻe a me nā ʻano hana ʻē aʻe ma o ka hoʻokumu ʻana i ka vacuum. He ʻano paʻa kona, ikaika compressive kiʻekiʻe, mālama wela haʻahaʻa a me ka nalowale wela haʻahaʻa. He kūpono ia no nā umu hoʻoheheʻe kikowaena alumini, keleawe a me ka zinc, nā umu hoʻomaʻemaʻe, nā umu static, a me nā umu uila. ʻO ka hopena insulation wela maikaʻi loa a me ka hopena sila o ka puka wai e ʻoi aku ka maʻalahi, palekana a hilinaʻi hoʻi i ke kaʻina hana hoʻolei o ka alumini-keleawe-zinc a me ka alumini-keleawe-zinc alloy.