... Rubber Stopper for Infusion Bottles,♥Butyl Rubber Stopper for Antibiotic Bottles,♥Butyl Rubber Stopper for Freeze-dry Bottles,♥Butyl ... Dropping,♥Multi-purpose butyl rubber buckle cover.We also product Flip off Seal, Aluminum Cap and Clear Glass ... pharmaceutical packaging material.We also make customized product according to customers’ requirement. Butyl Rubber stopper 20mm-B2 for Antibiotic bootles