Size No. 6-1/2 - Black Rubber Stopper - 1 Hole for Laboratory Glassware.
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.
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
