10pcs Laboratory Silicone Stopper Test Tube Hollow Plug - Non-Toxic, High Temperature Resistant Caps for Experiments(17-22mm)

Quantity 10 piecesScope of application: Can be used for test tubes, bottle stoppers, or other bottlesFeatures: neutral, breathable, non-toxic, high temperature resistant, , soft and durable, and has good electrical insulation, oxygen, light, anti-agingOrigin: Chinese Mainland

• Set of 10 silicone stoppers devised for laboratory use, perfect for test tubes and various bottle types.
• Made from non-toxic, breathable silicone material that ensures and durability during experiments.
• High temperature resistant and , ideal for a wide range of laboratory applications.
• Soft and flexible devise allows for easy insertion and removal, while providing a secure seal for your experiments.
• Excellent electrical insulation properties and anti-aging features make these stoppers a reliable choice for long-term use.