Silicone Stopper Rubber Stopper Silicone Rubber Stopper Top Diameter 27mm Bottom Diameter 31mm Suitable Container Diameter 27-31mm Pack of 2 White Weather Resistance Ozone Resistance Durability Pharmaceutical Medical Bio Science Laboratory 【Specifications】Product Name: Silicone Stopper; Material: Silicone Rubber; Color: White; Top Diameter: 27mm; Bottom Diameter: 31mm; Suitable Container Diameter: 27-31mm 【Excellent Performance】Maintains elasticity as rubber over a wide temperature range of -40 to +231°C and can be used in autoclaves. Easy to insert and remove rubber stopper. 【Durability】Excellent tear strength and compression set at high temperatures, especially superior to other rubbers. Compared to general rubber, it has good weather resistance and ozone resistance, with almost no change in appearance or physical properties. It has excellent electrical insulation and is not greatly affected by changes in external conditions. 【Convenient】You can easily make a hole by simply making a cut in the convex part of the bottom of the rubber stopper, simplifying the troublesome hole-making process. If you use it without making a cut, it can be used as a normal rubber stopper. 【Applications】Widely used in the field of science and chemistry research. Tasteless, odorless, and non-toxic, it can be used for food and medical devices. Widely used in pharmaceuticals, medicine, bio, and science and chemistry experiments. * Immediate purchase welcome, silent purchase at midnight OK ◎ * First come, first served for only one item * Welcome bulk purchases, feel free to comment * Free shipping! * Please contact us before evaluation if there are any problems. ᐟ.ᐟ ・Please understand and purchase as it will be stored at home and shipped in simple packaging. ・It has been opened for inspection, but it is an unused item. ・Please check the actual photos for the condition of the product♪ ※In order to sell at a slightly lower price, we may ship it after taking it out of the box due to shipping costs. #Click here for SYK's product list ✨☜ 27-36