These durable rubber stoppers with one hole are ideal for securely sealing laboratory glassware during science experiments in primary, secondary, and college settings. Designed for safe use with a range of chemicals, they help prevent spills and maintain controlled environments for practical investigations.

• Made from chemical-resistant rubber

• Bottom diameter: 27mm; Top diameter: 31mm; Length: 31mm

• With one hole for tubing or apparatus

• Temperature stable from -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.