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> New 40 x 17MM suba-seal test tube sure seal stopper
New 40 x 17MM suba-seal test tube sure seal stopper
Ideal for all types of glasswear
Specifically for Sure Seal Bottles but can be used with anything with matching neck size.
Ideal for air- and moisture-sensitive chemistry procedures. After piercing with non-coring needle, rubber closes puncture, providing air and moisture-tight seal to protect contents of vessel or container from atmosphere.
This closure has turnover flange molded to grip outside of container neck, promoting a double seal in conjunction with annular serrations on hollow plug. Annular serrations depress themselves against the inside wall of the bottle neck, making each serration a suction sealing point.
Note: For extra security when using large bore transfer needles, fasten septum to bottle or flask opening with a wrap-it tie.
