20mm Vial Stopper (13x20mm), 3-Leg Lyophilization Style Thin Flange Vial Stopper, Pack of 100. Thin top flange - beneficial when crimping onto serum 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.