UNITED SCIENTIFIC SUPPLIES Stopper: Rubber, 11 1/2 Stopper Size, 50 mm Bottom Dia, 63 mm Top Dia, 25 mm Overall Ht

This rubber stopper is used for sealing laboratory containers such as flasks, test tubes, and bottles. It provides a tight, reusable closure to prevent contamination, evaporation, or spillage of contents during experiments, storage, or transport in general lab environments.

The stopper is size 11-1/2, made of black rubber. It has a top diameter of 63 mm, a bottom diameter of 50 mm, and an overall height of 25 mm. The manufacturer part number is RST11A-H2, and it is produced by UNITED SCIENTIFIC SUPPLIES INC.

3G Electric supplies UNITED SCIENTIFIC SUPPLIES rubber stoppers worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the RST11A-H2 stopper.

Measure the inner diameter of your flask opening. The stopper's top diameter (63 mm) and bottom diameter (50 mm) indicate a tapered fit. Size 11-1/2 is a standard lab size. Ensure the stopper material (rubber) is compatible with your chemicals and temperature range.