These black stoppers are made of solid natural rubber and stays pliable over a long period of time. ideal for non aggressive or concentrated solutions and contains a low sulfur content. Withstands temperatures from -13 to 158°F (-25 to 70°C).
- 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: 1 to 6 Assorted sizes, 1 pound 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: 1 to 6 Assorted sizes, 1 pound of stoppers.
