Size No. 6-1/2 - Black Rubber Stopper - Solid (Qty. 1)

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Size # 6-1/2 - Black Rubber Stopper - Solid (Qty. 1) fits all 250ml and 500ml MLS brand Erlenmeyer flasks Laboratory Grade Rubber Stoppers Black rubber Stoppers with low sulfur con tent. 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. Specifications: Size: 6-1/2 Structure: Solid Hole Size: 5mm Top Diameter: 34mm Bottom Diameter: 27mm Fits Flask size: 250mL and 500mL MLS brand Erlenmeyer flasks Show more