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Rubber 20mm Sleeve Style Stopper, 13mm ID x 20mm OD (Case of 1000)
Sleeve stoppers are plug stoppers with fold-over skirts. This type of stopper is used on serum vials and other crimp-finish containers that do not require aluminum seals or overcaps. Sleeve stoppers can be used as an injection site for multiple dose entry. These stoppers are manufactured from natural red rubber, a general-purpose rubber formulation that has excellent resealable properties, making it ideal for use in multi-puncture applications.