20mm Vial Stopper, 3-Leg Lyophilization Style Vial Stopper, Pack of 100. Thin top flange - beneficial when crimping onto difficult vials with a licker top lip or when the vial seal has a shorter than ideal aluminum skirt.
Manufactured in the USA using chlorobutyl rubber. Meets USP Class 6 - sold in packs of 100 pieces.
All stoppers require appropriate washing, rinsing, and sterilization, whenever applicable, to meet industry specific requirements. We do NOT sell sterile stoppers.
20mm vial stoppers are for serum vials with a 13mm hole opening and 20mm outside rim-to-rim outer diameter.