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Size No. 3 - Black Rubber Stopper - Solid (Qty. 1)
Laboratory Grade Rubber Stoppers
Black rubber Stoppers with low sulfur content. Rubber stoppers are used to close test tubes and lab glassware, such as Erlenmeyer Flasks, Florence (Boiling) Flasks, Distilling Flasks, and Filtering Flasks, to prevent liquid from escaping.
Hole Size: N/A
Top Diameter: 24mm
Bottom Diameter: 18mm
Fit: all 5mm tubing and 250mL Distilling Flasks