Silicone Foam Test Tube Stoppers 12-17mm Tapered Bottle Plugs 100PCS | Silicone foam stoppers, tapered bottle plugs, general laboratory supplies, test tube plugs, 12-17mm, for 15mm tubes

This 100-piece set of silicone foam test tube stoppers is designed for general test tube covering, small bottle plugging, and laboratory organization. Each stopper features a tapered 12 to 17mm size range, suitable for compatible 15mm test tubes and small container openings. The silicone foam material provides a lightweight structure for easy placement and removal during routine lab, classroom, workshop, and display use. Suitable for tube covering, sample container organization, school projects, and general laboratory supply applications. Please confirm the tube opening size and stopper compatibility before purchase.

• 100PCS Stopper Set: Includes 100 pieces of silicone foam test tube stoppers for general test tube covering, small bottle plugging, and lab organization.
• 12 to 17mm Tapered Size: Designed with a tapered size range from 12mm to 17mm, suitable for compatible 15mm test tubes and small container openings.
• Silicone Foam Material: Made of lightweight silicone foam material for convenient placement, removal, and routine handling in general lab settings.
• Small Bottle Plug Design: Suitable for test tubes, small bottles, sample containers, and other compatible openings requiring simple temporary covering.