BIMSM Pharma Stoppers

BIMSM  

Exxpro™ specialty elastomers are brominated isobutylene paramethyl-styrene terpolymers (BIMSM). Together with Exxon™ halobutyl rubber, Exxpro specialty elastomers help the healthcare industry meet ever-changing requirements related to cleanliness, drug compatibility, low extractables and leachables.

Ideal for sensitive drugs and other demanding applications, Exxpro specialty elastomers are a super-clean solution and cost-effective alternative to expensive coated stoppers. In the tire industry, Exxpro is used for high-performance bladders and envelopes.


Benefits

  • High temperature resistance
  • Greater heat stability compared to EPDM rubbers
  • Low permeability and high damping similar to butyl rubber
  • Wide latitude in cure and cocure with a variety of rubbers
  • Ozone/weathering resistance
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Products

  • ExxonMobil Chemical Page

    Exxpro™ specialty elastomers

    Discover technical details and specifications for Exxpro product grades.

    View data sheets

Industries and applications

Featured resources

View highlighted news, events, technical papers and case studies below. To see our full collection of resources, browse our Library.
  • ExxonMobil Chemical Library icon

    Consistently applying tomorrow’s technology

    Read the full brochure to learn how high-quality, uniform products, supply reliability and our level of technical support have lead to successful application development.

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  • ExxonMobil Chemical Library icon

    Exxpro™ Specialty Elastomer Grade 3433

    Model formula for pharmaceutical closure Exxpro Specialty Elastomer Grade 3433.

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  • ExxonMobil Chemical Library icon

    Sustained commitment: Supply, innovation, technology and quality

    An interview with Kurt Aerts, Vice President, Global Specialty Elastomers and Butyl, ExxonMobil.

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  • ExxonMobil Chemical share button icon

    Pioneers of innovation: The fathers of synthetic rubber

    Read how these pioneers have opened doors to further learning and exploration in their fields and beyond.

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