Infusion stoppers

West Pharmaceutical Services infusion stoppers are high-quality primary packaging solutions. The infusion stoppers are manufactured in accordance with the applicable GMP guidelines (DIN EN ISO 15378) under defined and certified process conditions. The rubber stoppers are available in diameters of 26 mm and 32 mm in West formulations 4104/40 + 4001/45 (chlorobutyl) or 4023/50 (bromobutyl), among others. Rubber stoppers with FluroTec® barrier film are also available.


For other West rubber formulations and stopper designs please contact us.



Ø: Design: Compound: Silicone / B2: Coating: Finishing: Color:
26 mm 1105 4023/50 Silicone A   Standard red
32 mm 4443 4001/45 Silicone ½ A   RTS pink
  4541 4104/40   Flurotec® RTS grey
  4782 4104/40 B2-44   RTS grey

Drawings / data sheets of the stopper designs and rubber formulations or other helpful specifications and documentation are available on request.


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Would you like to learn more about the products of West Pharmaceutical Services or do you have any questions? Need a custom quote or information on ordering, delivery and payment terms? Contact us by phone, email or live chat.