VWR Corks

VWR Corks. Corks offer reliable performance with low breakage and excellent chemical resistance. For use with VWR safety-cork jars including the use of a magnetic stirring bar. All feature VWR engraved identification label. Nonsterile safety corks are designed with a small area of extra thick material across the entire top surface of the cork. Designed with a slightly broader bottom section to provide improved grip and an increased sealing area when the cork is fully submerged in water or other