Premium Rubber Stoppers for Laboratory Bottles - 14mm, 19mm, 20mm, Reverse Rubber Caps for Reagent Bottles, Grey(N0.14 20pcs)

Scope of application: Can be used for laboratory standard bottles, laboratory reagent bottles, etcSize:14 #: Plug diameter: 14mm19 #: Plug diameter: 19mmAttention: Please allow for small length deviations caused by human measurementHighly concerned about chemicals: noneOrigin: Chinese MainlandCategory: Flask

• Versatile Compatibility: Ideal for standard laboratory bottles and reagent bottles, ensuring a secure seal for various applications.
• Material: Made from durable butyl rubber, these stoppers provide excellent resistance to chemicals and maintain integrity over time.
• Multiple : Choose from sizes 14mm, 19mm, and 20mm, with options for 50 or 100 pieces to meet your laboratory needs.
• Easy to Use: The reverse devise allows for easy insertion and removal, making it convenient for frequent use in laboratory environments.
• Precision Fit: Each stopper is devised for a snug fit, minimizing the risk of contamination and evaporation in your experiments.