stonylab Solid Rubber Stoppers with Dual Hole, 5 Pack Air Tight 9# Natural Lab Seal for Chemical Experiments

Versatile Sealing: compliant for various applications requiring reliable sealing, the natural rubber stoppers offer dependable performance in diverse settings Dual-Hole Design: tailored to accommodate unique configurations, the dual-hole design facilitates adaptable usage for your specific needs Size 9#: 45 mm top length; 38 mm bottom length; 30 mm height; 7 mm hole diameter Sturdy Construction: crafted from premium rubber material, these stoppers boast durability, corrosion resistance, and excellent tolerance to acidic and alkaline environments, ensuring a long service life Warranty: stonylab ensures premium products and professional customer service; if received damaged, please contact us immediately; we will solve it until satisfied