Rubberized filter adapters are designed to seal and protect your glassware. These adapters will provide an air tight seal when filtering with filter flasks. They are usually used to support buchner funnels and protect glassware when filtering.
These adapters can be nested to create the perfect fit of the smallest of Buchners to the largest of Filter Flasks. Each adapter has a number molded on the top surface for easy reference. Set includes seven adapters.