Rubber Stoppers Solid - Bottom Diameter: 17mm - Pack of 10

These solid rubber stoppers are ideal for securely sealing test tubes, flasks, and other laboratory glassware in science lessons. Designed for reliable use in primary, secondary, and college settings, they help prevent spills and contamination during experiments.

• Made from durable, chemical-resistant rubber

• Bottom diameter: 17mm

• Top diameter: 20mm; length: 26mm

• Stable at temperatures from -20°C to 70°C

• Resistant to acids, alkalis, and ammonia

• Pack of 10 solid stoppers in Orange

• Easy to clean for repeated classroom use

• Suitable for use with Philip Harris Narrow Mouth Conical Flask 50ml (B8R07871)