MEDICAL STOPPERS AND MEMBRANES
Due to their sealing abilities, bromobutyl rubber stoppers are used for sealing medicine vials and bottles in hospitals and laboratories for the safe and effective storage and application of drugs and for scientific research.
It has been established that pharmaceutical packaging material is critical to the stability of a drug, because the packaging materials can directly influence the clinical curative effect of the pharmaceuticals.5
Bromobutyl rubber has several properties that make it applicable for medical and scientific uses; for example, it is chemically inert, nonpolar and contains a low level of extractable impurities that could contaminate the drug over time.6
Another important property is that the rubber’s membrane rejuvenates when pierced with a needle. This process can be repeated several times, so that the stopper does not need to be changed after each use.