Screw thread vials le caps li fana ka mouoane o fokolang, ho sebelisoa hape, kotsi e fokolang ea letsoho nakong ea ho qhekella ho feta li-crimp seal 'me ha li hloke lisebelisoa tse khethehileng. Likotlolo tsohle tsa likhoele tsa li-screw le likatiba li khetholloa ho ea ka khoele ea tsona joalo ka ha ho hlalositsoe ke Glass Packaging Institute, GPI. Bakeng sa li-screw thread vials, palo ea likarolo tse peli e abeloa. Ka mohlala, 8-425 molala qetellong e emela vial e nang le bophara ba 8 mm ka bophara ba likhoele le mokhoa oa khoele oa 425. Li-vial tsa screw thread le li-caps li theko e boima ho feta li-crimp seal.