Rubber Stoppers / Rubber Bungs – Solid, Pack of 10 (13 mm Bottom)

These Solid Rubber Stoppers are high‑quality, chemically resistant bungs designed for sealing small laboratory vessels such as test tubes and narrow‑neck glassware. Each stopper features a bottom diameter of 13 mm, tapering to a top diameter of 16 mm, with a length of 24 mm. Supplied in packs of 10, these durable stoppers provide a secure, reliable seal suitable for everyday use in school science laboratories.

Made from strong, flexible rubber, they withstand repeated handling and exposure to common chemicals, making them ideal for routine experiments and demonstrations.

Key Features

• Pack of 10 solid rubber stoppers
• Bottom diameter: 13 mm
• Top diameter: 16 mm
• Length: 24 mm
• Flexible, durable, and chemical‑resistant
• Provides a tight, leak‑resistant seal
• Ideal for small tubes and narrow‑neck vessels

Ideal for School Science Lessons

Perfect for KS3–KS5 chemistry, these small rubber bungs are excellent for:

• Sealing test tubes and small reaction vessels
• Preventing gas escape during simple experiments
• Safely storing small‑volume solutions
• Use during heating, mixing, and general practical work

Reliable and classroom‑ready, these stoppers are an essential addition to any school laboratory.