Suba Seal® Turnover Type Stoppers, Strem

Designed for working with air-sensitive materials, these Suba Seal® closures have a turnover flange molded to grip the outside of the container neck, promoting a double seal in conjunction with the annular serrations on the hollow plug.

Larger fitting surface
Serrated area holds pressure better
More solvent resistant

The membrane on top is thick and self-sealing, permitting a large number of syringe piercings. The annular serrations depress themselves against the inside wall of the bottle or flask neck, making each serration a suction sealing point.

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