What is this?Silicone rubber Hole plug is used to seal bottle flasks in the laboratory or seal holes tubes in the kitchen, home, etc, soft and flexible, easy to fit most holes.What will I get?The silicone rubber Hole plug is in size of: Height: 12mm / 0.47 Inch; Top Diameter: 46.5mm / 1.83 Inch; Mount Hole Diameter(Bottom Diameter):39.3mm / 1.55 Inch; Fit Hole Size: 38-39 mm; Hole Diameter: 29mm / 1.14 Inch; In the package of: 3 x Silicone Rubber Hole PlugAre there any advantages of the product?The silicone rubber Hole plug is made from soft and elastic silicone rubber, which is durable, not easy to crack, shrink, harden, or break, and can resist high temperatures up to 600 degrees Fahrenheit (315 Celsius) in a short time and can resist corrosion.
eBay