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Size No. 10 - Black Rubber Stopper - 2 Hole (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, and Filtering Flasks, to prevent liquid from escaping.
Structure: Drilled, 2 Holes
Hole Size: 5mm
Top Diameter: 50mm
Bottom Diameter: 42mm
Fits Flask size: 2000mL