12 Pack Size 1 Solid Rubber Stoppers, Tapered Lab Seal Tube Stopper Plug, 19x…

Tapered Design: The tapered design and smooth surface of the stoppers make it easy to plug and pull, and it has good insulation and sealing properties. Ideal for laboratory and industrial use. High Quality Material: The tapered lab plugs are made of solid rubber, not easy to deform, with excellent sealing and good elasticity, wear resistant and durable.