Seal Flip 20mm Black 100 Pack

Product Description

Supplied in a 100 pack, this closure consists of an aluminum crimp collar integrated with a black polypropylene flip-off button designed for serum vials with a 20 mm neck finish. The crimpable aluminum collar secures an underlying 20 mm stopper against the vial rim, while the removable plastic button protects the central injection site until flipped off to expose the puncture target. It is used in sterile compounding to seal parenteral solutions, suspensions, and reconstituted powders packaged in glass vials.