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Obturating means for container for pharmaceutical and medical preparation

Image Number 3 for United States Patent #5163919.

An obturating structure and a container provided with such an obturating structure and a syringe comprising a slidable obturating structure acting as a stopper; and a process for treating an obturating structure prepared at least from one elastomeric material and intended for a static or dynamic seal of a container holding a pharmaceutical or medical preparation, in which process at least the elastomeric part of the obturating structure is at least partially subjected to a treatment with elementary halogen or chemical compound(s) containing reactive halogen.

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