CanadianMedHealthSupplies butyl rubber stoppers (straight plug style) used to seal 20 mm serum vials in combination with 20mm flip top, flip off, and standard aluminum seals. Provides an airtight seal. These butyl rubber stoppers have been manufactured with high quality materials to withstand above average heat and be pliable to reduce the rubber stopper from fraying during drug extraction and contaminating the product within the serum vial. CanadianMedHealthSupplies Butyl Rubber Stoppers are durable and come in different sizes and colors.
