#3 Medium Rubber Stoppers - 8 Pack, Laboratory Grade for Test Tubes & Flasks, Chemical Resistant for Science Experiments & Home Brewing

Product Description Rubber Stoppers can be used for many different purposes, including sealing a glass container to keep out airborne contaminants. They are also used to plug bottles, lab vials and other openings. This easy-to-install stopper is made of black rubber, and available in several different sizes. From the Manufacturer Rubber Stoppers can be used for many different purposes, including sealing a glass container to keep out airborne contaminants. They are also used to plug bottles, lab vials and other openings. This easy-to-install stopper is made of black rubber, and available in several different sizes.

Easy installation

Available in a variety of sizes ranging from 000 through 21

Solid black rubber

Brand The Hillman Group