Description
Our high-quality rubber stoppers are soft, non-greasy and have a durometer of 45. They are sold in a one-pound pack.
These stoppers are size 10 and are solid (no hole drilled). Size 10 stoppers have top diameter of 50mm, a height of 25mm, and a bottom diameter of 42mm. Approximately 9 size 10 stoppers are included per one-pound pack.
GSC International RS-10 Rubber Stoppers, Size 10, Solid, 1-Pound Pack
Rubber stoppers are essential for creating airtight seals in laboratory experiments, making them ideal for chemistry, biology, and physical science classrooms. Sealing Glassware: Use rubber stoppers to securely close test tubes, flasks, and bottles, preventing spills, evaporation, or contamination during experiments. Water Displacement Demonstrations: Use rubber stoppers to seal flasks or bottles in water displacement setups, helping students visualize gas production. Custom Lab Equipment: Rubber stoppers with holes can be combined with thermometers, pipettes, or tubing to create DIY lab apparatus for various experiments. Durable and chemical-resistant, rubber stoppers are a must-have for any science classroom, helping students conduct safe and controlled investigations.
PRODUCT WARNINGS
This product is NOT A TOY. It is designed for educational, scientific, or professional use only. Adult supervision is required at all times. Improper use may cause injury or damage. Always follow safety guidelines and wear appropriate protective equipment. Not suitable for children 15 and under.
This product consists of small items, making it a choking hazard. Only use with adult supervision.Certified Women's Business Enterprise
Certified Women’s Business Enterprise (WBE)
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Product
Yes. Our labware and science kits are specifically designed for educational use and are trusted by schools, teachers, and homeschooling families.
Most of our kits include easy-to-follow instructions or experiment guides. If you need additional help, our support team is happy to assist.
We carry a wide range of science education tools across multiple disciplines, including:
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Our products are designed with education and safety in mind. Adult supervision is recommended for younger users, especially during experiments.
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We’ve been supporting science education for over 60 years, providing reliable labware and hands-on learning tools.
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