I-Magnesium oxide inokongezwa ngokuzikhethela ekuqulunqweni ukulungelelanisa i-coefficient of friction ukuya kwinqanaba elifunwayo, kunye neempawu zayo ze-thermal zibonelela ngokuzinza okulungileyo kwaye zivumela ukuhanjiswa kobushushu ukusuka kwiindawo zokuthintana.Ayisiyiyo loo nto kuphela, iipropathi eziphezulu ze-refractory ze-magnesia zinika ukuxhathisa okuqinileyo kumaqondo obushushu aphezulu ngelixa ugcina ukubamba.Ukongezelela, ubunzima obuphakathi kwe-magnesium oxide bukhusela ukuguga kwezinto ezichasene nesinyithi.