Reliable Tube Sealing: Lab rubber stoopers offer a precise fit for glass beaker rubber stopper needs, effectively sealing tubes and bottles against spills and evaporation during standard chemistry protocols
Secure Bungs Installation: Black tapered rubber plug style prevents unwanted loosening, keeping leak risks low and supporting safe, uninterrupted lab workflows in titration, heating, and general procedures
Gentle on Equipment: Experimental bottle sealing plug boasts a smooth surface, sparing lab glassware from scrapes or abrasions, thus extending the vessel’s usability and reducing replacement costs
Bulk Experiment Ready: This solid rubber stopper assortment provides 30 lab stoppers, supporting bulk classroom experiments and group use, allowing for efficient repeat trials and teaching sessions
Versatile Laboratory Application: The rubber filler bung adapts to a range of tube types, functioning as both tube stopper and bottle stopper, meeting varied laboratory sealing requirements