UNITED SCIENTIFIC SUPPLIES Stopper: Neoprene, 5 Stopper Size, 23 mm Bottom Dia, 27 mm Top Dia, 25 mm Overall Ht

This green neoprene stopper (size 5) seals laboratory flasks, test tubes, and bottles to prevent contamination or gas escape. Its 0-hole design provides a solid seal for general lab use, chemical containment, or vacuum applications where no tubing passage is needed.

The stopper is size 5, made of green neoprene, with a bottom diameter of 23 mm, top diameter of 27 mm, and overall height of 25 mm. It has 0 holes and is manufactured by UNITED SCIENTIFIC SUPPLIES INC under MPN NST5-S.

3G Electric supplies and delivers UNITED SCIENTIFIC SUPPLIES stoppers worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure your order arrives at your facility, wherever it is located.

Measure the inner diameter of your flask neck. The stopper's top diameter (27 mm) should be slightly larger than the neck opening, while the bottom diameter (23 mm) fits inside. For a snug seal, choose a stopper size that matches your flask's standard size designation, such as size 5.