Ideal for science classrooms and labs, these rubber stoppers with a single hole help securely seal flasks and test tubes during experiments. Designed for reliable chemical resistance, they support safe and practical hands-on investigations for students in primary, secondary, and college settings.

• Made from durable, chemical-resistant rubber

• Bottom diameter: 29mm; top diameter: 33mm; length: 32mm

• Number of Holes: 1

• Temperature range: -20°C to 70°C

• Pack of 10 stoppers- Orange

• Easy to clean and suitable for repeated use

• Please note: Extreme care must be used when inserting glass into the holes in rubber stoppers.  See CLEAPSS for details.