2542 20mm aluminum vial caps products are offered for sale by suppliers on Alibaba.com, of which lids, bottle caps & closures accounts for 64%.
A wide variety of 20mm aluminum vial caps options are available to you, such as red, yellow and white.You can also choose from vials, bottle and cans 20mm aluminum vial caps,as well as from plastic, glass, and pp and aluminum 20mm aluminum vial caps, and whether 20mm aluminum vial caps is non spill, child-proof, or non-refillable.