What is this?The Rubber Tapered Plug is great for laboratory utensils such as flasks, test tubes, or other laboratory applications, also can as a sewer plug, water pipe plug, or drain plug.Are there any advantages of the product?Made of Rubber, with good resistance to chemicals, acid and alkali resistance, can withstand high temperatures in a short time.How to use it?Conical design, solid, easy to install and good sealing performance, flexible and durable, not easy to crack, shrink, harden or break.What should I notice?Please check the size carefully before ordering! This product has a smell, please put it in a ventilated place before use to reduce this smell
