ʻO ka ʻili kila silikoni, ʻike ʻia hoʻi ʻo ke kila silika uila, hana ʻia me ke kila uila e like me ka mea maka nui a hoʻohui ʻia kekahi hapa o ke silika. ʻO kāna hana nui e hōʻemi i ka nalowale o ka magnetic a me ka hao o nā mea uila e like me nā motors, transformers, generators, a hoʻomaikaʻi i ka hana pono a me ka mālama ʻana i ka ikehu o nā mea uila. ʻOkoʻa loa nā waiwai magnetic o ka pepa kila silika me nā kila uila, he kiʻekiʻe ka magnetic permeability a me ka ikaika magnetization haʻahaʻa, e hoʻololi i ka ikehu o nā mea uila.