mama vaeluaga o se ituaiga o olo sima packing.It e sili atu acid tetee ma vevela tetee.E mafai ona tetee atu i le corrosion o acids inorganic eseese, organic acids ma solvents organic sei vagana ai hydrofluoric acid, ma e mafai ona faʻaaogaina i tulaga maualuga pe maualalo le vevela.O le faʻapipiʻiina e mafai ona faʻaaogaina i koluma faʻamago, faʻafefe koluma, malulu malulu, olo olo ma koluma actifier i kemikolo alamanuia, metallurgy alamanuia, alamanuia kesi koale, alamanuia gaosia okesene.