A sleeve stopper is a plug stopper with a fold-over skirt that is used on serum vials and other crimp-finish containers that do not require an aluminum seal or overcap or need a temporary, reusable closure. The diaphragm can be punctured with a syringe needle, self sealing after the needle is withdrawn.
- Provides a temporary, reusable airtight seal for vials.
- Durable, 20 MM, red rubber sleeve stoppers.
- Will fit all 20 MM GPZ vials sold.