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20mm NovaPure Bromobutyl 4023/50 Lyophilization Stoppers
Qty. 500 stoppers/carton

NovaPure™ lyophilization stoppers made from 4023/50 a premium quality bromobutyl elastomer with West’s lowest particulate specification available. Laminated with FluroTec™® barrier film to help reduce particulate, limit drug interaction with elastomer, reduce leachables. These components are provided ready to use, sterilized and 100% vision inspected via our Envision™ inspection process. This stopper configuration can be used with European blowback, North American blowblack, or straight wall (no blowback) vials. West Item Number: 19700365

Max limit = 5
20mm NovaPure Bromobutyl 4023/50 Lyophilization Stoppers

In a quantity of 500 stoppers per carton, ideal for small-volume filling or filling for lyophilized or dry powder products. Choose these stoppers if you need a premium quality sterile lyophilization stopper with the lowest level particulate and tightest specification available from West.

500 stoppers / double STERILlizableBAG™ 

One double STERILlizableBAG™ / hinged plastic carton

Package Assembly Illustration 

West’s comprehensive Integrated Solutions Program offers expert testing to support drug product containment systems throughout the development process.  Our technical expertise for pharmaceutical packaging includes vials, stoppers and seals, with an in-depth understanding of regulations and market requirements, including USP <1207>.  A dedicated Project Management team will help to identify key stakeholders to provide consultation and the creation of a customized study design. 


Integrated Solutions Information Sheet

Integrated Solutions Proposal Overview

Product is registered trademark of West Pharmaceutical Inc.