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Materials Technology

Elastomers - Pharmaceutical

James Walker's pharmaceutical grades of ethylene-propylene-diene, fluorocarbon and silicone elastomers have been independently tested and certified to United States Pharmacopeia (USP) Class VI. In addition, we offer two DuPont Kalrez grades with USP Class VI.

This stringent biological evaluation has been designed to ensure that products manufactured from the material will be non-toxic, and suitable for use in selected medical devices or in contact with injectable drugs.

DuPont Kalrez® 6221 & 6230

For high-purity duties in pharmaceutical & food processing

  • Certificated to USP Class VI
  • Sealing ability of rubber with almost universal chemical resistance
  • Thermally stable up to 260°C for Stage II sterilisation
  • Low contamination from extractables
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Elast-O-Pure® EP75 Black

Developed for pharmaceutical environments

  • Certificated to USP Class VI
  • Ethylene-propylene-diene terpolymer with extremely low extractables
  • Very low compression set for long-term sealing efficiency
  • Excellent resistance to SIP and CIP processes
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Elast-O-Pure® GF75 Black

Meets stringent pharmaceutical requirements

  • Certificated to USP Class VI
  • Based on Chemours Co. Viton®
  • Fluorocarbon with extremely low extractables
  • Excellent resistance to SIP and CIP processes
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Elast-O-Pure® SIL70 Translucent

Platinum-cured translucent silicone (VMQ)

  • Certificated to USP Class VI
  • ADI-free material
  • Low compression set for long-term sealing
  • High temperature resistance
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