A coated rubber stopper is a rubber stopper that has been coated with a material such as silicone or polytetrafluoroethylene (PTFE) to provide additional properties such as improved chemical resistance or a lower coefficient of friction. These stoppers are commonly used in laboratory and industrial settings to seal containers and bottles containing chemicals, gases, or other materials that may react with or damage uncoated rubber stoppers.
They are commonly used in laboratory equipment and medical devices to seal containers and protect contents from contamination. The coating can be made from materials such as silicone, polytetrafluoroethylene (PTFE), or polyvinylidene fluoride (PVDF) depending on the specific application.
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