20mm USA Glossy Flip Cap Vial Seals, Black on Gold, Bag 1000

20mm Glossy Black Flip Cap on Gold Aluminum - MAKE IT BOLD WITH BLACK ON GOLD

For serum vials with a 13mm hole opening and 20mm outside rim-to-rim diameter. No embossed words on cap - completely smooth blank surface complies with new USP regulations effective December 1 2013.

Manufactured in the USA. Aluminum skirt portion of these vial seals are pre-fabricated with the hole already punched through. This greatly reduces the chance of sharp, jagged metal edges after removal of the plastic flip cap.