United Scientific RSTPK2 Premium Laboratory Black Rubber Stoppers | Good to Seal Bottles, Tubes and Many Other Containers - Black Lab Plug | #00 to #7 Assorted Sizes | 1LB of Stoppers

United Scientific RSTPK2 Premium Laboratory Black Rubber Stoppers | Good to Seal Bottles, Tubes and Many Other Containers - Black Lab Plug | #00 to #7 Assorted Sizes | 1LB of Stoppers

• Tapered Design - Smooth and tapered sides make these stoppers easy to plug and pull. All United Scientific rubber stoppers are reusable, and promote a sustainable laboratory or classroom environment.
• Natural Rubber - Made from premium natural rubber, not easy to deform, elastic and great for sealing. Manufactured according to laboratory standards
• Extensive Use - Rubber stopper Ideal for laboratory and industrial use, can be used to seal test tubes, flasks, etc. Available in a wide range of sizes.
• Low sulfur content. Withstand temperatures from –25 to 70°C (–13 to 158°F). They do contain latex.
• Size: #00 to #7 Assorted sizes, 1LB stoppers.

<div class="aplus"><p>The United Scientific RSTPK2 Rubber Stopper Assortment is a 1lb. bag of solid rubber stoppers in sizes 00 to 7. The stoppers are solid (no holes) and are tapered to fit compatible labware, bottles, flasks, test tubes, and other containers. </p><p>United Scientific Supplies manufactures laboratory supplies and science education products. The company, founded in 1992, is headquartered in Waukegan, IL. </p></div>