A Set of 50 Rubber Stopper for Boiling Tube.

Product: A Set of 50 Rubber Stoppers — Designed for Boiling Tube
Quantity: 50 stoppers per set
Material: Durable, chemically resistant rubber
Design:

Tapered, solid (without hole) stopper

Air-tight, flexible, and reusable
Features:

Chemically inert and non-reactive — suitable for laboratory use

Provide a tight seal to avoid contamination or evaporation

Durable, reusable, and flexible for repeated use
Suitable for: Chemistry labs, education, industrial applications, and scientific experiments