No ke kumu maʻamau ka uwea kūloko o nā mea uila a me nā lako uila, kahi i ʻike ʻia i ka ʻaila ma kahi mahana ʻaʻole ma mua o 60°C a i ʻole 80°C. ʻO ka mānoanoa insulation kūlike o ka uea e hōʻoia i ka wehe ʻana a me ka ʻoki ʻana. Kū'ē i nāʻakika, alkalis, nā aila, ka wai a me nā haʻi.