Solid Rubber Stoppers (Bungs) – 27mm Bottom, Pack of 10

These Solid Rubber Stoppers (Rubber Bungs) are a robust and reliable laboratory accessory, designed for use in school science classrooms and laboratories. Manufactured from durable solid rubber, they provide a secure and airtight seal for larger laboratory glassware and containers used during practical experiments.

Each stopper features a 27mm bottom diameter, a 31mm top diameter, and a 32mm length, ensuring a firm and stable fit in compatible flasks and vessels. Supplied in a practical pack of 10, these bungs are reusable, long‑lasting, and well suited to regular use in busy educational environments.

Key Features

• Pack of 10 solid rubber stoppers
• Bottom diameter: 27mm
• Top diameter: 31mm
• Length: 32mm
• Manufactured from durable, high‑quality rubber
• Provides a secure, airtight seal
• Reusable and suitable for repeated classroom use
• Ideal for larger laboratory glassware

Ideal for School Science Lessons

These solid rubber bungs are ideal for KS3, GCSE, and A‑Level science lessons, particularly in chemistry and physics where larger vessels need to be securely sealed. They support a wide range of practical activities, including:

• Sealing flasks and larger laboratory containers
• Conducting chemical reactions requiring closed systems
• Preventing spills during controlled experiments
• Supporting safe storage of liquids during investigations
• Ensuring reliable and repeatable practical setups

Strong, dependable, and easy to use, these solid rubber stoppers are an essential component of any school science equipment collection, supporting safe, organised, and effective hands‑on science learning.