4040 LyoTec® Stoppers

West Pharmaceutical Services, Inc., a global leader in innovative solutions for injectable drug administration, has released its 4040 LyoTec® Westar® Select Ready-to-Sterilize (RS) and Ready-to-Use (RU) Lyophilization Stoppers, the first components of a portfolio of vial closures to be developed using West’s new state-of-the art elastomer formulation, 4040/40 gray.  By combining the demonstrated success of an established design and significant levels of expertise in testing and raw material selection, we have achieved improvements and optimized benefits across the spectrum of packaging attributes required for performance, quality, and safety of the packaging and delivery of lyophilized drug products.

Selecting a container closure system (CCS) is an important part of the pharmaceutical commercialization process. It is important to ensure that the components selected are compatible with the drug product to be packaged; however, it is equally important to ensure that the components are compatible with each other. Here we provide background on the importance of correct pairing between vials and stoppers and showcase lyophilization stoppers V-50-I (13mm) and S-87-I (20mm) in the 4040/40 Gray formulation that can be paired with any vial blowback geometry.