Red rubber stopper with two holes, featuring a bottom diameter of 23.00 mm, top diameter of 29.00 mm, and height of 30 mm, is designed for sealing laboratory glassware while allowing access for tubing or probes.
Made from flexible, durable red rubber, it provides a tight and reliable seal, even under moderate pressure or vacuum. The two through-holes accommodate glass or plastic tubing, making it ideal for setups involving gas flow, liquid transfer, or closed-system experiments.
Key features:
– Tapered shape for versatile fit across various neck sizes
– Resistant to water-based solutions, alcohols, and mild chemicals
– Reusable, with good mechanical stability and grip
Commonly used in flasks, bottles, and reaction vessels in chemical, biological, or educational laboratories.