Screw thread vials uye caps inopa yakaderera evaporation, reusability, kushoma kukuvara kweruoko panguva yekushandura pane crimp seal uye haidi yakakosha maturusi. Ese screws mabhodhoro nemakepisi anosiyaniswa neshinda yawo kupera sekutsanangurwa kwazvinoitwa neGlass Packaging Institute, GPI. Kune screw thread vials, nhamba yezvikamu zviviri inopihwa. Semuenzaniso, 8-425 mutsipa kupera inomiririra chivharo chine dhayamita 8 mm kunze kwekunze kweshinda uye shinda yemhando ye 425. Screw thread vials uye caps zvinodhura kudarika crimp seal.