rubber stoppers
Flexible bottle seals
Rubber stoppers are cylindrical plugs made of rubber, used to seal the openings of flasks, test tubes, and other laboratory containers.
They're often tapered to fit snugly into vessels of various sizes and may have holes drilled through them to accommodate tubing or thermometers: Insert the rubber stopper firmly into the flask.
- corkTree bark bottle seal
- bungWooden barrel seal
- sealAuthentication stamp or mark
- tight sealImpermeable joining of surfaces
- plugSomething that blocks openings
laboratory · lab equipment · science class · flask · beaker · airtight · air tight seal · silicone · neoprene · test tube · vial · elastic · squeaky · chemistry · chemical resistant · fermentation · home brewing · wine making