Quality and Safety in Drug Packaging
West’s stoppers maintain the quality and safety of drugs packaged in small volume in 13mm and 20mm vials. West manufactures its products from innovative, universally applicable elastomeric formulations and in configurations suitable for most parenteral uses. West recommends stopper formulations that meet the standards of European and United States Pharmacopoeia, and most customers find them to be appropriate for their drug product delivery systems. For drugs with special characteristics, West applies its research, technical and engineering services to develop an alternative that meets the customer’s requirements.  

West’s tamper-evident Flip-Off^® seals help manufacturers ensure patient safety and product security.
Flip-Off seals help maintain container closure integrity and provide excellent machineability on high-speed filling lines.