Sealing Mat for 96 Round Well Plate, with “-” opening, diameter of 8.3mm, Natural Silicone Material, 10 pieces per pack, Item number MS983RS, Non-Sterile. Sealing Mats are manufactured from research-grade silicone, are easy to open and close, have good sealing performance and can prevent the volatilization of a variety of solvents. Can withstand a wide temperature range of (- 50ºC – 200ºC), and is suitable for various experiments. Excellent chemical resistance and can be autoclaved.